This is what I run normally. My main render box, is a custom (home) built Athlon 64 3200 box, 1GB PC3200 RAM thats 400DDR. NVidia FX5600 card with 128MB video ram. About a combined amount of 920GB of drive storage available. I run WIndows XP Pro (just waiting for longhorn to get the 64Bit extensions) The system screams normally, I have a Gigabyte Triton Nvidia NForce 350 motherboard. To give you an idea of how long a decent render takes. If I render an object with about 200 elements Say 20-25 light sources, some transparent and semi transparent items and dont forget refractions, A single frame render at 1600x1280 300Dpi (I use a lot of these for print), takes about 1 week to 10 days. This is on just the one machine. Most renders take a lot less, overnight for the megastar class starship model I have in my gallery. Transparency seems to eat the most memory and cpu time. I would definitely consider upgradeing memory at least, a faster CPU wouldnt hurt, the Celeron caching is not the best, which can slow down renders, a real P4 or Athlon chip would work better.