Must have programs on PC?

I have two desktops and a laptop. We are going to reformat everything and get rid of two of them.

What are some of the programs that you can't live without?

Windows XP SP2

Anti-Virus - ? recommend

Spyware - plan on using the one Fin recommended

Abobe PS CS2

DVD/CD burning program - ? recommend

There was a similar thread a while back, I'll up it for you

Peerguardian.