Whenever you create a new file in the visual studio, you are asking it to put a file as it is specified in its templates. The templates are located in
C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\ItemTemplatesCache and for web development you need to look into the Web folder in there.
There are some handy parameters like $time$ and $user$ that you can see in the MSDN at Visual Studio Template Reference: http://msdn.microsoft.com/en-us/library/ms247064(VS.80).aspx
