My wheezing old Compaq has been behaving badly for months, and it is not worth spending any money on. Today I picked up a refurbished Dell Optiplex GX 620 that should serve my needs nicely. Now maybe I'm paranoid but I'd like to have anti-virus and anti-spyware programs loaded before hooking it up and thought I'd solicit some opinions on what to use. I understand there is no one size fits all answer, just curious as to what you use and how it works for you.