Re: Anti Virus
AVG is my favorite but Avira is also very good except for the annoying pop up window that comes up when you update telling you to upgrade to the premium version. I think that both Avira and AVG are probably the best free antivirus programs out there.
Desktop: Dell Dimension E510, 2.5GB RAM, Intel P4 3.0GHZ, 250GB HDD, Windows Vista Premium. Might not be the best, but the old girl is still running good.