Everyone one knows IntelliSense is great. But the worst thing about it is when you are in Visual Studio and you haven’t got it. If you are a SharePoint Developer using CAML (not necessarily by choice) then CAML IntelliSense is going to be useful. The following should enable CAML IntelliSense for WSS 3.0 in Visual Studio 2005.
In note pad enter the following text:
Save the file as CAML.XML in the following directory:
C:\Program Files\Microsoft Visual Studio 8\Xml\Schemas\
You should now have CAML IntelliSense when you next load Visual Studio 2005.