4200 doesnt meet minimum requirements but the 9800 pro will just.
as for being a fanatic... sorry thats just laughable .. for a start laptops in general aint made to play games and yours defiantly isnt. i know that makes me sound like a jerk but saying your fanatical when you dont have the kit to actually play games is a bit of an overstatement aint it...
better stick to phrases like enthusiastic beginner, or keen amateur.
if you want to play pc games than look to spend $500 or £350 on an entry level destop as a bare minimum. if you want enthusiast gaming then your looking at £800 or $1200 to get a very good max settings kind of setup.