A lot of us have read that Windows has a 4 GPU limit and that Windows XP can't do 4 GPU's.  Let's verify/dispel those myths.

• Is there anyone out there that has more than 4 GPU's mining on a box running Windows OS?
• Is there anyone that's been able to get 2, 3 or 4 cards mining using Windows XP?

Edit: If anyone can answer yes to either of those above, please list your hardware/software setup.