Here is a CJM file for THEC64 and THEVIC20
T:Pumpkinkid
X:vic,pal,accuratedisk,fullheight,35k
J:1*:JU,JD,JL,JR,JF,JF,F1,F3,F5,F7,,,JF,,
You will need to name the CJM file the same as the file on your USB drive, but with a CJM extension. So if the game in your folder is called pumkinkid.prg, create a CJM file called pumkinkid.cjm