True, touchpads and FPS dont mix, but thats why you attatch a mouse to it :P but there are several mods for half life 1 & 2, like for number 1, there Zombie Panic and Natural Selection. Natural Selection has got to be the best mod that is muiltiplayer for Half Life of all time (depending on you taste in games, but still good.) I havn't played any of these in a long time, due to me getting HL2 so... but still worth a try for you to give it a shot, really fun. They are all based on the HL1 engine so if you comp can run HL1, it can run these.