This puts you at $800. I use my pc for the basics, I play Star Wars Galaxies (with 3 instances) and I par/unrar 8GB HDWMV files so I there may be some overkill....
currently I run vista ult on a Pentium D 805 with 2GB ddr2 and a radeon x850xt so this would be a huge upgrade... thanks for the input.
More aboutbuild q9550 base cheaper
I would keep everything you except change the processor to the Q6600 which for $190 and get a after market cooler for about around $30 overclock to 3.0-3.2 are set. Its still quad core this will save you over $100.