Greetings, djshort23.
First off, disconnect your computer from the internet immediately. A hacker may be watching you, stealing your credit card numbers, passwords, and maybe even be using your computer's connection to help infect others.
I recommend booting into safe-mode to back up your important files, then rebooting from your OS's install disk to reformat your hard drive, and finally reinstalling your Operating System.
If you don't know how to do any of that, ask us and we'll guide you.