You are surely screwed.. I went thru all that same stuff. I built a very high end rocket-blasting system.
Antec Sonata Case
ASUS P5W64 WS Professional Main Board all PCI-Express slots
Intel Duo Core E6700 2.66GHz Overclocked to 3.1GHz running the Front Side Bus @ 1.066GHz
2G Main Memory
650W PS
NVIDIA GeForce 8800GTX 768MB 384bit 900MHz PCI Express Video card.
Dual 100GB Serial ATA 10,000RPM HDDs in Raid 0 (For speed only.)
Threw on a delightful Logitech G7 Laser Cordless Mouse.
Loaded on Vista....
Couldn't get it to run on my video card in anything but default slow mode. First two applications failed to run correctly.
Yanked it off.
Dropped on XP64. WOW!! The most sublimely smooth speed I've ever seen. Ran some benchmarks and was astounded by the results. It blew thru intensive graphical benchmarks so fast that you could barely follow the planes and strafing attacks!! Everything was about 8x normal speed. The Dual Cores shared the processing and thermal loading perfectly.
Then reality set in.. I couldn't get half the games running. They flat wouldn't even install. All complained about "missing files". I presume standard 32bit ones included in XP but completely lacking in XP64.
I finally, and with great angst, yanked XP64 and had to reach for XP just as you had/have to.
Sorry man.
Keith Cress
Flamin Systems, Inc.-