Well I decided upgrade my Athlon 64 3000+ to an Intel Core 2 Quad Q6600, on an NVIDIA 680i SLI EVGA mainboard. I also ended up going with Microsoft Vista Business 64 bit rather than XP for the new setup.
There is one downside to the new setup. Unfortunately, my 7800 GTX just locks up once Vista starts. It seems that once any 3d stuff kicks in the card hard locks. Luckily, a friend of mine was willing to loan me a 7900 GTX to use since he’s planning to upgrade soon.
The nice part of the new setup is that I can game, watch an HD movie, and extract a large file all at the same time with no real slowdown.