Norton sucks. Personal experience, known vulerabilities, they do not notify customers of, when you get hit with the virus/worm, for an additional $30.oo USD fee, they will re move it! Definately go McAfee. I personally went AVG. I am on XP sp2, and my IT person (my son) still has not a shred of trust in it.
but, that is just mho
All great projects succeed one step at a time. One lone step firmly placed.