QUOTE(jthomasb1987 @ Aug 5 2006, 12:43 AM)

The U64 ones being the .chd files? I'm not sure if I understand you correctly. If I look for the U64 files, then I have to use the U64 emulator opposed to the KIXXX?
U64 for the PC uses it's own format for the KI1 and KI2 hard drive image. They are in img format
MAME for the PC uses it's own format for the KI1 and KI2 hard drive image. They are in chd format
They both use the same format for the roms I beleive.
KI-XXX is a port of U64 for the PC to the Xbox. Therefore you can only use the hard drive image that is in the "img" format.
You could download the mame hard drive image in chd format and convert it to "img" format, but it's probablly going to be easier for you to just find the "img" hard drive image in U64 format.
Thus, look for KI or KI2 for U64 and not for MAME.
Once you have it. You will need to rename the rom files to match the names required by KI-XXX. I posted the rom names in the KI-XXX 1.0 thread.