Well thanks for all the help, I really do apreciate it
What I ended up doing is downloading the RAID drivers from Gigabytes site, and the .exe I mentioned earlier was a WinRAR archive, not a .exe executable like I orignally thought. So, I went ahead and put those WinXP Raid drivers on a floppy and ran the Windows XP setup disc again.
Needless to say, it recognized my RAID array just fine after that. But, I still ran into issues, so I did fixboot, then I ran chkdsk and it completed at 100% but the machine locked up afterwards....
So, I restarted, and now all is well (hopefully)