just purchased one asus radeon 4770! problem is im not sure if my pretty much bone stock system will run it. i have a gateway 503gr,its a intel pent.4 with the 3.0 ghz, 800 mhz system bus processor,i also purchased 4 new pny 1gb dual channel ram the hard drive is a 160 gig serial ata 7200 rpm. i dont do alot of hard-core gaming but ive been playing alot of AoE 3 and it will run on my system but is very slow.which makes it a very boring game to play.so my question is will i be able to just pop the card in and download the drivers and be set to go.if needed i have a 500watt psu then i can switch over.any suggestions would be greatly appreciated.