Hello all guys, I'm going to DIY a new pc station(but I have no idea) how about this hardware system?

Intel Xeon 5410 2.33G * 2
Intel S5000XVNSATA
2G FB-DIMM 667 ECC * 2 or 4
nVIDIA Quadro FX1500(256MB GDDR3) by leadtek or 1700(512MB GDDR2)

Please post and give me some advices, thanks!