I hate computer viruses

[520Talon]

I just got my computer back from the geek squad fri. It is working for the first time in 3 weeks. I had two viruses and more spyware than he said he had ever seen. He said if my computer virus was 'the happies' it would have had open soars from head to toe.

I know some of you guys know computers whats the best way I can protect it in the future? I put on (had them put on) norton 2004 is that enough?

Thanks