Sorry the double post, but after a lot of trial and error... I found the problem!!!
The game is made to be played from
floppy disk, the game expect the files in root of drive
Just in DOSBOX mount jimpower folder to drive A, and in DOS use a floppy
The game work like a charm
For sure back on the day, i played from floppy
If the game is installed, not need to use crack to play, at least for me, is working well, but of course, game is difficult trainer is a must
jeje
Thanks