hello
decided to start folding with my hdtv rig. I will eventually get it on my server and main rig - but for now at least it's a start. I used to run BoinC on them all , until memory errors and overheating made me stop. now I think i have the memory errors fixed and want to do something more important than SETi@home

though i love it....
the rig i want to run this on is my PII rig.. I want to squeeze every last drop of power out of it, including overclocking. It is a PII 940 @3ghz now, willing to overclock the heck out of it. also i have a 512mb 4870 in this machine, and would like to run on that as well... I could put a second in if it will scale to be worth it. Work pays for electricity so im not worried about that
I was looking to get rid of the 4870s soon here, would there be something more cost-efficient that could give similar power?
any advice? I know how to follow instructions and will read the recommended tuts - but I am more of a quick-start kinda guy and any concise info would be greatly appreciated....
thanks in advance!!