for you experts:  My wife and I have a ps2 we bought for xmas.  Don't play it much.  I'm a BIG fan of FPS (quake, duke nukem, half life, now playing farcry) on pc using keyboard/mouse.  I can't get use to playing with the sticks on the controller, can't hit anything as my aim keeps jumping around.
1.  so, how do you guys play FPS's with a controller?  I've rented MOH and couldn't play it.
2.  a good buddy has convinced me that I would love halo and the "lan parties" he sets up.  So, I am about to try FPS on the xbox and willing to give it another shot.  Amazon has a special on an xbox/halo combo.  is there a device that I can use to connect both xbox and ps2 to tv? (and atari 2600?

? maybe too much to ask for).  my wife wants to play zelda on a gamecube, so to keep peace I may have to buy yet a third system.  too many cables to change out unless I can get some type of switch box.
I was thinking about holding out for xbox 2, but then I read the latest news that it will be next year, and halo 2 is scheduled for later this year.
thanks,