I did some browsing from viaarena.com:
Special Rom Drives (re-writers etc): Probably not recommended that you install the VIA IDE miniport Driver as the default Microsoft driver provides better support for such devices, in general. This is because ATA/ATAPI devices are controlled by complex commands and their drivers are written to comply with the Microsoft default IDE driver. But at the same time, in most instances the VIA IDE Filter driver would be beneficial for ROM drive stability.
There is a good comparison table of drivers at
http://www.viaarena.com/?PageID=66I initially bought a 761+686B motherboard but even after 3 weeks of continuous tweaking, I couldn't get it to run stable.
I changed it for this KT266A board which has been rock solid compared to the 686 board. My only problem is a randomly occuring BSOD which is a problem that will be addressed in W2k SP3 according to MS bulletins.