I'm left handed but I use my mouse and keyboard like a right handed. Amongst other games (including their single player counterparts) I enjoy COD4 multiplayer and as many of you would know it can be quite ruthless. But I've played for a while now and my kill:death rate hasn't improved from 1:1. Apart from teamwork and lucky nading, COD4 is game of "he who sees the other opponent last dies", quick reaction and flawless aiming. I'm wondering if using the mouse with my "weak" right hand is slowing me down and handicapping my reaction and aim. To contrast, some of the aiming and reaction time displayed in the servers (by topnotch players) I play is breathtaking. I also use a Toshiba A300 (ATI Radeon 3650, 512mb, 1200 x 800 res), and a cheap optical mouse. Is it a disavantage to play COD4 mp on a laptop with its inferior graphics and screen size? If you have any experience, insight on these two issues--your comments/feedback would be appreciated. Cheers.