The HD 3200 is an onboard graphics chip, right? That is, it's integrated with the motherboard.
Anyway, I think a new GFX card is the first thing to do. More RAM might help a little if there's a lot of other stuff running on your machine, but my guess is you won't notice much difference.
Unless a screwdriver to you means only vodka and orange juice, you should be able to install a new graphics card just fine
