There's a beta bios upgrade, which will also take the raid controller to the same version number of the one you can get from highpoint (103). Grab ftp.abit.com.tw/pub/beta/k7/bios/ktul103.zip for the bios update, and ftp.abit.com.tw/pub/beta/k7/driver/raid103.zip for the drivers for Windows. This should do it.
I hope this helps!
Gabriel.