I just realized that I never posted a followup to my computer problems saga. About a month ago I gave up and disabled my RAID and installed Windows XP in preparation for Oblivion. Everything is working now. I’m able to play games without crashes, and I wrote a new backup utility to replace most of my RAID’s functionality.
I’m glad this is over, but I’m disappointed in VIA (my motherboard manufacturer) for making such a flaky product and not providing a fix after all of this time.