diff --git a/lib/X11.rb b/lib/X11.rb
index 8e8324d..12bca7c 100644
--- a/lib/X11.rb
+++ b/lib/X11.rb
@@ -8,5 +8,7 @@ require 'hexdump'
 require 'X11/protocol'
 require 'X11/auth'
 require 'X11/display'
+require 'X11/screen'
 require 'X11/type'
 require 'X11/packet'
+require 'X11/packets/display'
diff --git a/lib/X11/display.rb b/lib/X11/display.rb
index 04250fc..eb539ba 100644
--- a/lib/X11/display.rb
+++ b/lib/X11/display.rb
@@ -24,6 +24,12 @@ module X11
       authorize(host, family, display_id)
     end
 
+    def screens
+      @internal[:screens].map do |s|
+        Screen.new(self, s)
+      end
+    end
+
     private
 
     def authorize(host, family, display_id)
@@ -49,14 +55,11 @@ module X11
       when X11::Auth::AUTHENTICATE
         raise AuthorizationError, "Connection requires authentication"
       when X11::Auth::SUCCESS
-        puts "SUCCESS"
+        @socket.read(7) # skip unused bytes
+        @internal = Packet::DisplayInfo.read(@socket)
       else
         raise AuthorizationError, "Received unknown opcode #{type}"
       end
-
-      @socket.read(7)
-
-      puts Packet::DisplayInfo.read(@socket).inspect
     end
   end
 end
diff --git a/lib/X11/packet.rb b/lib/X11/packet.rb
index 0835898..7e079cb 100644
--- a/lib/X11/packet.rb
+++ b/lib/X11/packet.rb
@@ -5,22 +5,22 @@ module X11
       include X11::Type
 
       class << self
-        def create(*values)
-          lengths = lengths_for(values)
+        def create(*parameters)
+          lengths = lengths_for(parameters)
 
           packet = @structs.map do |s|
             case s.type
             when :field
-              s.encode.pack(values.shift)
+              s.type_klass.pack(parameters.shift)
             when :unused
               "\x00" * s.size
             when :length
-              s.encode.pack(lengths[s.name])
-            when :data
-              if s.encode == X11::Type::String8
-                X11::Type::String8.pack(values.shift)
-              else
-                vals = s.encode.create(values.shift)
+              s.type_klass.pack(lengths[s.name])
+            when :string
+              s.type_klass.pack(parameters.shift)
+            when :list
+              parameters.shift.each do |obj|
+                s.type_klass.create(*obj)
               end
             end
           end
@@ -35,20 +35,17 @@ module X11
           @structs.each do |s|
             case s.type
             when :field
-              values[s.name] = s.encode.unpack( socket.read(s.encode.size) )
+              values[s.name] = s.type_klass.unpack( socket.read(s.type_klass.size) )
             when :unused
               socket.read(s.size)
             when :length
-              size = s.encode.unpack( socket.read(s.encode.size) )
+              size = s.type_klass.unpack( socket.read(s.type_klass.size) )
               lengths[s.name] = size
-            when :data
-              if s.encode == X11::Type::String8
-                values[s.name] = X11::Type::String8.unpack(socket, s.size)
-              else
-                puts lengths[s.name]
-                values[s.name] = lengths[s.name].times.collect do
-                  s.encode.read(socket)
-                end
+            when :string
+              values[s.name] = s.type_klass.unpack(socket, lengths[s.name])
+            when :list
+              values[s.name] = lengths[s.name].times.collect do
+                s.type_klass.read(socket)
               end
             end
           end
@@ -57,12 +54,11 @@ module X11
         end
 
         def field(*args)
-          name, encode, type = args
-          puts name
-          s = Struct.new(:name, :encode, :type).new
+          name, type_klass, type = args
+          s = Struct.new(:name, :type_klass, :type).new
           s.name = name
           s.type = (type == nil ? :field : type)
-          s.encode = encode
+          s.type_klass = type_klass
 
           @structs ||= []
           @structs << s
@@ -85,7 +81,7 @@ module X11
 
           fields.each do |s|
             value = args.shift
-            lengths[s.name] = value.size if s.type == :data
+            lengths[s.name] = value.size if s.type == :list or s.type == :string
           end
 
           return lengths
@@ -100,97 +96,5 @@ module X11
       end
     end
 
-    # Information sent by the client at connection setup
-    #
-    # 1                        byte-order
-    #      #x42    MSB first
-    #      #x6C    LSB first
-    # 1                        unused
-    # 2    CARD16              protocol-major-version
-    # 2    CARD16              protocol-minor-version
-    # 2    n                   length of authorization-protocol-name
-    # 2    d                   length of authorization-protocol-data
-    # 2                        unused
-    # n    STRING8             authorization-protocol-name
-    # p                        unused, p=pad(n)
-    # d    STRING8             authorization-protocol-data
-    # q                        unused, q=pad(d)
-
-    class ClientHandshake < BasePacket
-      field :byte_order, Uint8
-      unused 1
-      field :protocol_major_version, Uint16
-      field :protocol_minor_version, Uint16
-      field :auth_proto_name, Uint16, :length
-      field :auth_proto_data, Uint16, :length
-      unused 2
-      field :auth_proto_name, String8, :data
-      field :auth_proto_data, String8, :data
-    end
-
-    class FormatInfo < BasePacket
-      field :depth, Uint8
-      field :bits_per_pixel, Uint8
-      field :scanline_pad, Uint8
-      unused 5
-    end
-
-    class VisualInfo < BasePacket
-      field :visual_id, VisualID
-      field :qlass, Uint8
-      field :bits_per_rgb_value, Uint8
-      field :colormap_entries, Uint16
-      field :red_mask,  Uint32
-      field :green_mask, Uint32
-      field :blue_mask, Uint32
-      unused 4
-    end
-
-    class DepthInfo < BasePacket
-      field :depth, Uint8
-      unused 1
-      field :visuals, Uint16, :length
-      unused 4
-      field :visuals, VisualInfo, :data
-    end
-
-    class ScreenInfo < BasePacket
-      field :root, Window
-      field :default_colormap, Colormap
-      field :white_pixel, Colornum
-      field :black_pixel, Colornum
-      field :current_input_masks, EventMask
-      field :size_in_pixels, Uint16
-      field :size_in_millimeters, Uint16
-      field :min_installed_maps, Uint16
-      field :max_installed_maps, Uint16
-      field :root_visual, VisualID
-      field :backing_stores, Uint8
-      field :save_unders, Bool
-      field :root_depth, Uint8
-      field :depths, Uint8,:length
-      field :depths, DepthInfo, :data
-    end
-
-    class DisplayInfo < BasePacket
-      field :release_number, Uint32
-      field :resource_id_base, Uint32
-      field :resource_id_mask, Uint32
-      field :motion_buffer_size, Uint32
-      field :vendor, Uint16, :length
-      field :maximum_request_length, Uint16
-      field :screens, Uint8, :length
-      field :formats, Uint8, :length
-      field :image_byte_order, Signifigance
-      field :bitmap_bit_order, Signifigance
-      field :bitmap_format_scanline_unit, Uint8
-      field :bitmap_format_scanline_pad, Uint8
-      field :min_keycode, KeyCode
-      field :max_keycode, KeyCode
-      field :vendor, String8, :data
-      field :formats, FormatInfo, :data
-      field :screens, ScreenInfo, :data
-    end
-
   end
 end
diff --git a/lib/X11/packets/display.rb b/lib/X11/packets/display.rb
new file mode 100644
index 0000000..2ad1ec8
--- /dev/null
+++ b/lib/X11/packets/display.rb
@@ -0,0 +1,84 @@
+module X11
+  module Packet
+
+    class ClientHandshake < BasePacket
+      field :byte_order, Uint8
+      unused 1
+      field :protocol_major_version, Uint16
+      field :protocol_minor_version, Uint16
+      field :auth_proto_name, Uint16, :length
+      field :auth_proto_data, Uint16, :length
+      unused 2
+      field :auth_proto_name, String8, :string
+      field :auth_proto_data, String8, :string
+    end
+
+    class FormatInfo < BasePacket
+      field :depth, Uint8
+      field :bits_per_pixel, Uint8
+      field :scanline_pad, Uint8
+      unused 5
+    end
+
+    class VisualInfo < BasePacket
+      field :visual_id, VisualID
+      field :qlass, Uint8
+      field :bits_per_rgb_value, Uint8
+      field :colormap_entries, Uint16
+      field :red_mask,  Uint32
+      field :green_mask, Uint32
+      field :blue_mask, Uint32
+      unused 4
+    end
+
+    class DepthInfo < BasePacket
+      field :depth, Uint8
+      unused 1
+      field :visuals, Uint16, :length
+      unused 4
+      field :visuals, VisualInfo, :list
+    end
+
+    class ScreenInfo < BasePacket
+      field :root, Window
+      field :default_colormap, Colormap
+      field :white_pixel, Colornum
+      field :black_pixel, Colornum
+      field :current_input_masks, EventMask
+      field :width_in_pixels, Uint16
+      field :height_in_pixels, Uint16
+      field :width_in_millimeters, Uint16
+      field :height_in_millimeters, Uint16
+      field :min_installed_maps, Uint16
+      field :max_installed_maps, Uint16
+      field :root_visual, VisualID
+      field :backing_stores, Uint8
+      field :save_unders, Bool
+      field :root_depth, Uint8
+      field :depths, Uint8,:length
+      field :depths, DepthInfo, :list
+    end
+
+    class DisplayInfo < BasePacket
+      field :release_number, Uint32
+      field :resource_id_base, Uint32
+      field :resource_id_mask, Uint32
+      field :motion_buffer_size, Uint32
+      field :vendor, Uint16, :length
+      field :maximum_request_length, Uint16
+      field :screens, Uint8, :length
+      field :formats, Uint8, :length
+      field :image_byte_order, Signifigance
+      field :bitmap_bit_order, Signifigance
+      field :bitmap_format_scanline_unit, Uint8
+      field :bitmap_format_scanline_pad, Uint8
+      field :min_keycode, KeyCode
+      field :max_keycode, KeyCode
+      unused 4
+      field :vendor, String8, :string
+      field :formats, FormatInfo, :list
+      field :screens, ScreenInfo, :list
+    end
+
+  end
+end
diff --git a/lib/X11/screen.rb b/lib/X11/screen.rb
new file mode 100644
index 0000000..1efefcc
--- /dev/null
+++ b/lib/X11/screen.rb
@@ -0,0 +1,18 @@
+module X11
+  class Screen
+    attr_reader :display
+
+    def initialize(display, data)
+      @display = display
+      @internal = data
+    end
+
+    def width
+      @internal[:width_in_pixels]
+    end
+
+    def height
+      @internal[:height_in_pixels]
+    end
+  end
+end
diff --git a/lib/X11/type.rb b/lib/X11/type.rb
index f1669e4..6254bff 100644
--- a/lib/X11/type.rb
+++ b/lib/X11/type.rb
@@ -35,7 +35,6 @@ module X11
     KeyCode      = Uint8
     Signifigance = Uint8
     Bool         = Uint8
-
     Bitmask      = Uint32
     Window       = Uint32
     Pixmap       = Uint32
@@ -50,8 +49,8 @@ module X11
     VisualID     = Uint32
     EventMask    = Uint32
 
-    # Strings are "Special" in X11 they are a list
-    # data type but their padded
+    # Strings are "Special" in X11 they need
+    # their own class unfortunately since strings are padded
     class String8
       def self.pack(x)
         x + "\x00"*(-x.length & 3)
@@ -65,15 +64,5 @@ module X11
       end
     end
 
-    # List.of(Foo)
-    # In this document the List.of notation strictly means some number of
-    # repetitions of the FOO encoding; the actual length of the list is encoded
-    # elsewhere
-
-    class List
-      def self.of(type)
-      end
-    end
-
   end
 end