Well I'm personally a bit confused as to why you'd be losing that much space if you're not downloading anything. You should try running as Disk Cleanup (Start Menu -> Accessories -> System Tools -> Disk Cleanup). You may also want to try a program like CCleaner to get rid of old temp file and registry entries, etc. Hope that helps some. As for Microsoft Office 07, have you tried getting it from the Microsoft website? It seems like you would be able to download a trial version from there at least, and if you have a CD key, you "should" be able to activate it and get the full version. P.S. - You should create a system restore point before you run CCleaner.