Alright, I figured out how to run M1 from command prompt, so I typed in m1.exe jpark. At first it seemed to be working, but then it said ROMs not available, "jpark.zip". So I put the zip archive in the folder and titled it jpark along with the rom. It still comes up ROMs not availabe, "jpark.zip" and then Aborting ROM or something like that. So now what am I doing wrong? My guess would be an incomplete file (part of the file is missing) but the rom runs fine in an emulator, except M1.
Okay, still won't work. I did what you said when I renamed the ROM, so now it won't work. I'm not sure how to check the CRC, but that's most likely the problem.