Cheers for the tips, everyone!
Looking at other threads on the forums, i am seeing that the xfx version may not be the best choice available... does this make any real technical difference? Is there anything you would particularly recommend?
One more question: How would I go about overclocking? I have never done it before, and have heard quite alot about it going wrong...
In case it's useful, my system specs are:
Gigabyte GA-K8NF-9 motherboard
Athlon 64 3200+ CPU
2 x 17" 1280*1024 res monitors
1GB Kingston PC3200 DDR RAM (2*512)