yes yes, i know waht you mean. basically what it is saying is.. that it has temp files to run those windows installing stuff on ur computer to reinstall windows.
this is what you do. DO NOT , i repeat DO NOT run the windows cd in while ur running windows. (if you follow through by installing starting while running windows.. it preinstalls stupid files so you get that problem ur facing now)
all you have to do is.. just pop the cd in, restart ur computer, (without running the setup.exe) and go straight into the cd.
that way, ur computer wont be dumb and say blah blah blah temp files on comp.
gl and happy gaming.