I have used (and still use) all of the sites/programs listed here. I wanted to list them here for those of you who may need them. :)
This is a free online virus scan. If you think you may have a virus, you can go here, do a quick scan, and get rid of any viruses you may have.
This is an Instant Messenger Program. It handles AIM, MSN, Yahoo, ICQ, and IRC. So, instead of having a lot of messengers that you have to open, you only have to sign onto one service.
Getting a lot of pop-ups for no reason? This program will rid your computer of spyware and adware that causes pop-ups.
Do you have a lot of passwords that you just can't seem to remember? Try using this program to store all those hard-to-remember passwords and you won't have to worry about them anymore!
Internet not running as fast as you think it should? Test your internet speed here.