Someone else was using the computer (I believe it was one of my family members.)
Anyways, now, everytime I start up Internet Explorer, instead of going to my homepage (Yahoo!), it goes to some website named prosearching.com. Also, there is an extra toolbar that just doesn’t want to go away. Even if I disable the toolbar and change the homepage back, when I start IE back up again, the same thing reverts back to prosearching.com
Get yourself a free copy of AdAware and Spybot Search & Destroy, and clean all the spyware off your computer. Before scanning, don’t forget to have each program check for updates. You should scan with both programs, as they complement each other, and find things the other misses. Then use SpywareBlaster to block over 1100 different flavors of spyware.
Norton has added spyware blocking. If you are using it for your firewall/virus scan, upgrading to Internet Security 2004 is worth it IMHO. We had the exact same problem.