Hey, I have a late 2009 27" iMac i7 with the Radeon 4850, I am running windows 7 64 bit on bootcamp for gaming. I was wanting to know if anybody has found which is the best performing graphics driver, I am currently using the driver installed via bootcamp 3.0, the driver from bootcamp 3.1 messed up the colour detail (would not display 32bit colours properly). Has anybody found a decent functional driver from ATI or have modded a driver for better performance?? Those people who have successfully played top end games at high settings what driver do you use?? Thanks.