Stormy13 is right. The cpu is very much capable of running 64 bit, it's a new series, man, not the ordinary X2! AMD is always underrated for some reason

!! Yes, I am worried about the psu, bt my budget is restricted, when I can I plan to buy Coolermaster Xtremepower 460 watt psu :
eXtreme Power Plus 460W (120mm fan) - Cooler Master
But my worry is if I buy the 7600 gt before the psu, will it cause power outage? The card i'm looking @ the vendor tells me that that particular model has much lower power consumption than the average 7600 gt...is there such a model??