first off i doubt ut would work well with that sort of a cluster (possible but not likely in my eyes) simply because even though it could be seperated into small tasks they would have to come back to the orianal machine (there is a reason why agp has a speed of 1 gb/s)

but as for a cluster solution. i found a live cd called cluster knoppix (uses openmosic) that seems to work (can't really tell you i tried it on a 1.7ghz and 300 mhz for an amazing 2ghz so i couldn't really see that much difference). and who knows maybe it will work for you.