Welcome to the Fold, gabshere and ComcastOrge!  March marked my seventh year Folding for SatelliteGuys.
gabshere, I have a 9800 GTX card in my one XP box downstairs.  The new Windows Client makes it a snap to set up two Folding clients, one for your GPU and one one for your Q6600 CPU.  You should be able to generate 5,000-8,000 Points per Day with that setup.  It may take 10 Work Units on the CPU client before you see full credit, however, so let it run a week or so before you look at your daily numbers.  Also, make sure you have the current NVIDIA drivers.  Finally, a can of compressed air to clean the heatsinks because Folding wil keep your fans going.