> I ran CMPro to check my Good2800 set

2800??????? :)

> My question is this: Is there any way for the .dat file to check for multiple
> extensions, or perhaps ignore the extensions altogether?

The GOODTOOLS don't care about extensions which isn't a good thing. ClrMamePro doesn't and won't support such a lazy name check.

Roman Scherzer
ClrMamePro