IMO you would be better off keeping your C drive to about 30GB and using this only for progs and OS. All other data on your 160GB. You can move the OE store folder to D. This means slightly faster access to progs, a qucker Acronis backup and restore. Quicker defrag. Put your 2nd 160 GB or your 80GB drive in an enclosure and use that as an ext usb drive. It only takes me less than 15 minutes to reload win and my progs using Acronis restore, and if windows crashes, I don't lose any data.