Grenades are like RAM, you can never have too much
computers dont work that way how old they are doesnt matter much, any idea what parts are inside (or any stickers on the outside saying anything?)
you can only run halo 2 on windows vista
unless you crack/patch it with third party stuff
it would probably lag on your pc though
halo CE is unlikely, almost any pc can run it, and even if yours cant, you can turn the settings down in it and make it look like a sega dreamcast game.
Get halo 1, dont get halo 2
EDIT: sadly, no. the movement was designed for the WASD keys only, if you nudge the controller forwards he sprints forwards max speed. there is no way to fix this without obtaining "something" from "someone".
[Edited on 09.27.2010 8:50 AM PDT]