diff --git a/Prebuild.xml b/Prebuild.xml
index b022b813..d9e858c3 100644
--- a/Prebuild.xml
+++ b/Prebuild.xml
@@ -90,6 +90,8 @@
         </Options>
       </Configuration>
 
+      <Reference name="System"/>
+
       <Files>
         <Match path="." pattern="*.cs" recurse="true"/>
       </Files>
diff --git a/Source/Examples/OpenGL/Basic/Lesson01/Basic01.cs b/Source/Examples/OpenGL/Basic/001 - Cube/Basic01.cs
similarity index 100%
rename from Source/Examples/OpenGL/Basic/Lesson01/Basic01.cs
rename to Source/Examples/OpenGL/Basic/001 - Cube/Basic01.cs
diff --git a/Source/Examples/OpenGL/Basic/Lesson01/Properties/AssemblyInfo.cs b/Source/Examples/OpenGL/Basic/001 - Cube/Properties/AssemblyInfo.cs
similarity index 100%
rename from Source/Examples/OpenGL/Basic/Lesson01/Properties/AssemblyInfo.cs
rename to Source/Examples/OpenGL/Basic/001 - Cube/Properties/AssemblyInfo.cs
diff --git a/Source/Examples/OpenGL/Basic/Lesson01/Properties/Resources.Designer.cs b/Source/Examples/OpenGL/Basic/001 - Cube/Properties/Resources.Designer.cs
similarity index 100%
rename from Source/Examples/OpenGL/Basic/Lesson01/Properties/Resources.Designer.cs
rename to Source/Examples/OpenGL/Basic/001 - Cube/Properties/Resources.Designer.cs
diff --git a/Source/Examples/OpenGL/Basic/Lesson01/Properties/Resources.resx b/Source/Examples/OpenGL/Basic/001 - Cube/Properties/Resources.resx
similarity index 100%
rename from Source/Examples/OpenGL/Basic/Lesson01/Properties/Resources.resx
rename to Source/Examples/OpenGL/Basic/001 - Cube/Properties/Resources.resx
diff --git a/Source/Examples/OpenGL/Basic/Lesson01/Properties/Settings.Designer.cs b/Source/Examples/OpenGL/Basic/001 - Cube/Properties/Settings.Designer.cs
similarity index 100%
rename from Source/Examples/OpenGL/Basic/Lesson01/Properties/Settings.Designer.cs
rename to Source/Examples/OpenGL/Basic/001 - Cube/Properties/Settings.Designer.cs
diff --git a/Source/Examples/OpenGL/Basic/Lesson01/Properties/Settings.settings b/Source/Examples/OpenGL/Basic/001 - Cube/Properties/Settings.settings
similarity index 100%
rename from Source/Examples/OpenGL/Basic/Lesson01/Properties/Settings.settings
rename to Source/Examples/OpenGL/Basic/001 - Cube/Properties/Settings.settings