I'm now working on RC Windows 7 and installed Visual Studio 2008 Professional edition. But I need to work with Java programs, and so I needed to work with Visual Studio 2005. I installed Visual Studio 2005 SP1 (VS80sp1-KB926747), but I have the following problem:
"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."
I previously had the same problem when I installed the Visual Studio SDK, February2007.
BBlake is right look at: https://superuser.com/questions/34190/visual-studio-2005-sp1-refuses-to-install-in-windows-7