2 programs you should absolutely have on your PC, that have saved my life numerous times: Norton AntiVirus, and GoBack by Roxio. I have only accidentally downloaded a virus once in 2 years of having my PC, and Norton AV detected it immediately and flashed a warning on my screen. The GoBack software lets you revert your hard drive to the way it was before the virus got in, so I did a GoBack revert and the virus was gone. GoBack is also great for when stuff just generally gets screwed up and you wish you could "go back" to when your PC was working properly. It doesn't erase saved documents or anything like that. I always scan anything I download from the Internet with Norton AV before I install or open it, since I download a lot of music files and "shareware" programs, and that seems to be the source of the viruses. Norton AV can be had for about $30.00, and there are usually rebates available. The GoBack came with my PC, so I'm not sure of the price, but it would be worth ANY amount of money, as far as I'm concerned. (Windows XP has a similar program preinstalled, called System Restore, but it doesn't have the capabilites that GoBack has, as far as precisely pinpointing when the problem occurred.)

Drop some hints around the house - these would make great Christmas gifts for computer users.......