I have a B&W with a Sonnet G4 800MHz chip, 1GB RAM and 3x 30GB HD(2 in striped RAID config). I salvaged most of the parts, but bought the G4 primarily to use iChat AV with a USB webcam. It's very slow (~5fps) and everything else is still not what I was hoping for. Would a graphics card do the trick? Do I need a new ATA card? (especially if I get a DVD-R) etc. Cost-wise I'm thinking I should just trade it in for a mini. This has to be really on the cheap.

Any suggestions?