After installing VS 2005 on Windows 7, I got this error message when try to run it for the first time
"Visual Studio 2005 SP1 requires an update for Windows Vista"
Download SP1 Update here: http://go.microsoft.com/?linkid=6366078 and run the installer in administrator mode.
If you are trying to debug web projects, you need to make sure that you go to the Add/Remove Windows Components in Control Panel and install the IIS6 Compatibility with IIS7 option, otherwise you won’t have much luck.
Tested on Windows 7 Professional 32bit