Grenades are like RAM, you can never have too much
halo CE is arguably BETTER than the console version, it by no means is a bad port like H2V
there are about 3000 people that have played it in the last week
sadly, its not completely compatable with 360 controller for windows, if you install xpadder you can map the keys to keyboard keys and make it sorta work, only theres a few problems with the left analog stick, it works like keyboard keys.
see if you move your stick forward its FULL ON FORWARDS or not at all, and there isnt anything inbetween diagonal left forward and forward, so movement is a bit clunky, try out halo trial to see if you can play, i know people that use the controller in it...