I was able to fix my computer finally. I wish I didn't spend so much time on the phone with tech support!
In case this ever happens to you, let me tell you how I fixed it. My computer started acting really weird Friday night. Norton would not work and my firewall went down. I tried to install and reinstall and it would not compete the installation process or validate the software.
I used the system restore feature in Windows and restored it to last week. It worked like a charm! I was able to uninstall and install Norton and it's working fine now. Thanks God (or Bill Gates) for Windows Restore. I forgot I had that option, but it comes in handy!