I just saw the news yorks times one day that makes me wonder, they said few high school told their students to vulenteer to donate old machines that are in 600mhz-1.4ghz to a web ready shared network? to form a supercomputer, using linux. I wonder how they do it, and how it work? I mean how the os is installed sinultaneously within this computers. if i want it to run a super large program how can i run it? that turns up my curiosity, can anyone give me any clue?