Let me try to guess parts:
Motherboard: ASUS Maximums Formula
CPU: Q6600 or E6750
RAM: Not sure - but those heat spreaders look familiar
CPU Cooler: Zalman 9500 or 9700
PSU: Something from Corsair?
Sound Card: X-Fi
VGA: 8800 GTX, GTS, or Ultra - They all look similar to me