In this first moment I would like to say thanks for your attention. Mi name is Clessio and I'm a physics student at UFPE, Brazil. Today I have a serious doubt. I can't imagine how can I construct a cluster wuith differents kinds of PC´s (6 AMD Athlon 64 bits, motherboard - K8TNeo-V) and 2 Pentium IV 3.2Ghz. If anyone know something about it, please tell me as soon as possible.