Ernie,
You do the same as I do. I never have any of my drives even close to half full, but I guess old habits are hard to break. And like when you were getting that virus out of your friends computer and it kept coming back, cleaning out the Page File and System Restore every once in a while will save you some grief at times. I like this computer with the two stand alone 500 Gig hard drives as I can just copy all of my graphics and space eating stuff onto the "D" drive and it is much faster to get when I want it than using a CD or DVD to copy it onto. And that speeds up the "C" drive too since that stuff is on the other disk.
Ron