ok I will be the first to ask you why you are shopping in the museum parts dept?
the core 2 quad while a fine cpu is very dated already
the nvidia 8800 again was great 4 years ago
you would be better suited spending your coin on a new set up that has a better life expectancy like a core i5, or i7 rig. they can be had for less money and get much better results for anything you are going to do.
that system that he posted is his current system and he was asking how much is it worth if he sold it.
also thats the G92 version of the 8800, so its as old as the 8800gt. performance is comparable to the 9800gtx