Alright, so I have an NTSC Wii with 4.0 firmware, and a burned MultiGame disc of Resident Evil Zero CD1 & CD2 (both games burned on one CD). I've looked into it, and so far I could only find this: http://www.youtube.com/watch?v=N-Md6rP6W2o
The description says that it works for FW 3.3 though...