The free Norton Anti-virus that came with my new Dell computer is about to expire, and a pop-up window keeps warning me to renew/update for a fee. Is this worth it? Any options? It seems to me this is almost like extortion-if I don't renew, they'll send some virus into my computer. My last computer, a Compaq, ran great until the warranty expired. Within a week, it started self-destructing. Coincidence? I think not. Any freeware out there that will do a good job with the virus situation?