Hi Jerry My case is a very good one. I'm able to use 22 Dual Core PCs in a cluster which has nearly up to 10 times of performance of a single system. The C5 package for icecream can be found on: http://repo1.pst.beuth-hochschule.de/repo/bs/el5/ (this OpenDNS Domain is hard to resolve from outside EU, so 141.64.26.2 should always work). Brian.