Oh and I picked up a gamepad (logitech f310), so I'm going to see how that works (supposedly keyboard & mouse are superior for fps, just want to try it out since I used to play original Ghost Recon with a joystick and that definitely worked better than kb+m). Interestingly, to get the gamepad to work on xp, you have to install ms xbox controller drivers:
http://forums.logitech.com/t5/Logitech-G-Controllers/Logitech-F310-Windows-XP-32-bit-Service-Pack-3-My-installation/td-p/619074