MSDN Developer Downloads

http://msdn.microsoft.com/en-us/aa570309.aspx

Visualstudio Gallery (Products and Extensions for Visual Studio)

http://visualstudiogallery.msdn.microsoft.com/

Sql Server Library

http://technet.microsoft.com/en-us/library/bb545450.aspx

Dotnet Stuffs

http://www.codeproject.com/KB/ajax/

Interceptors (HttpModule and HttpHandlers)

http://www.codeproject.com/Articles/30907/The-Two-Interceptors-HttpModule-and-HttpHandlers

Ascii Symbols

http://whatis.techtarget.com/reference/ASCII-symbols

How IIS Process Asp.Net Request

http://www.dotnetfunda.com/articles/article821-beginners-guide-how-iis-process-aspnet-request.aspx