Do I really have to pay to re-register my Nortons Anti-Virus protection software? or Should I replac

I have like a week remaining. I did'nt know I have to pay for an upgrade every year... Is it worth it, can I upgrade for free someway?? What happens to my protection for my cpu if I don't upgrade? If not is there a virus protector you know about I should get that might be better, cheaper, or free other then Nortons. I got Nortons because the McAfee installed with my cpu let a real bad virus in. And I heard Norton's is better then McAfee. PLEASE HELP, I APPRICIETE IT...

Do I really have to pay to re-register my Nortons Anti-Virus protection software? or Should I replace it?free spyware remobal

This is what I use.

AVG Removes I-Worm/Stration 路 BackDoor.Generic3.GBB and .GBC 路 Worm/Generic.FX 路 Exploit.WMF

http://free.grisoft.com/doc/5390/lng/us/...

And for anti spyware I use these,

Spybot - Search %26 Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies. If you see new toolbars in your Internet Explorer that you haven't intentionally installed, if your browser crashes inexplicably, or if your home page has been "hijacked" (or changed without your knowledge), your computer is most probably infected with spyware. Even if you don't see the symptoms, your computer may be infected, because more and more spyware is emerging. Spybot-S%26D is free, so there's no harm giving it a try to see if something has invaded your computer.