If you are planning on using the same parts till the pc stop
working, that motherboard isn't a problem. The 7600 and 8400 are
not very new cards, but for normal games will be fine. However for
the new GTA4 or crysis , they wont work very fast.
THat P5SD2 supports from celeron to core 2 duo, but not the core
2 quads.
And when you are choosing the processor and Mobo, especially for
newer graphic cards, your motherboard(mobo) need to have the:
"PCI EXPRESS 2.0 X16" not just "PCI EXPRESS X16" slot
The Difference between them is the amount of data that the
motherboard can take in through the slot. This can be easily find
out in searching the mobo's model in a search engine.
THe mobo must be also able to support higher fsb rams if you are
thinking of upgrading next time.
If you are only going to use 1 graphic card, there is no need to
buy those with "crossfire ready" boards
For under a thousand dollars, you might have a chance to get
something good if you customise properly.
If i were you, i will spend my thousand dollars like the following,
price from http://bellsystems.com.sg
MSI P45 Neo3 FR + E8400(core 2 duo) = $440
2GB kingston ddr2 valueram 800mhz=$28
Seagate 500gb HDD=$90
HIS 4850 ICEQ4 (is a cooling feature)= $289
Coolermaster Extreme power 550watts = $89
LG DVD drive = $33
Maybe $100 for case
Total around $1069
Very good alredy, however, i will
increase my budget by $33, and get a Quadcore Q6600