2 Gig is plenty. A very fast CPU is good. Several fast harddrives is good too. I have 6 physical drives of which 1 is external, Poser has no trouble with any of it. Poser makes a CPU run really hot. Make sure you have a powerful power supply with lots of cooling and a really, really good cooler fan/sink on the CPU itself. Graphics card has almost no significance for Poser at the moment. Windows version - 2K or XP, makes no significant difference. :] Fish