I'm trying to install Visual Studio 2005 in Windows 7. When attempting to start, Windows 7 complains that Visual Studio 2005 is incompatible with Windows 7 and offers me to search online for a solution. It comes up with a link to Visual Studio 2005 SP1 for Windows Vista and Windows 7, but when I download it (VS80sp1-KB932232-X86-ENU.exe) and try to run it, it refuses to install saying that
The upgrade patch cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade patch may update a different version of the program. Verify that the program to be upgraded exists on your computer and that you have the correct upgrade patch.