so im coming on a large sum of money about 900$ and was thinking of getting a new rig... AMD Opteron 246 Troy 1000MHz HT Socket 940 Processor Model OSA246FAA5BL - OEM x2 ASUS K8N-DL Dual Socket 940 NVIDIA nForce4 Professional Extended ATX Server Motherboard - OEM Kingston HyperX 1GB (2 x 512MB) 184-Pin DDR SDRAM DDR 400 (PC 3200) ECC Registered Dual Channel Kit System Memory Model KRX3200AK2/1G - OEM HIS Hightech H190GTQ256DVN Radeon X1900GT 256MB GDDR3 PCI Express x16 IceQ3 Video Card - Retail
From what you've selected, and considering your budget, the setup looks pretty nice. However, you may want to save a few extra bills and get another gig of RAM, since 1GB is starting to not cut it. Other than that, everything looks pretty well for a tight-spaced limit.
