I've installed Steam do my D:\ drive, and reinstalled windows without backing up most of my files on C:\. I then installed Steam over the old directory. I can run all of the games I had installed, but there are some ties to the OS missing. Can I repair my game installs somehow so that they get back what they're supposed to have on C:\? I don't mean savegames and settings files.
This is a general questions, but what prompted it is a problem with a mod installer. In this specific case, I want to install the S.T.A.L.K.E.R. Clear Sky Complete mod using the installer, but it can't locate my STALKER CS installation. I'm guessing it just checks the registry. I've got version 1.5.10 of the game, and the download page says it should support that.