If you want an awesome multiplayer FPS, look at PlanetSide. They have a free 30 day trial if you run Windows XP, otherwise, a 7 day trial exists.

The game play is similar to Tribes, but on a much bigger scale. I have personally been in battles with over a hundered people in the same area. Let me know if you grab it, I can show you around the game using voice chat to communicate.

Oh, and Loren, any chance of getting one of the Armed and Dangerous preorder discs? My local software store got one total, even though I proeordered specificially to get that disc.