OK, I've answered my offtopic questions by myself:
1st: I just use an integrated keyboard emulator which is in my mouse software.
So I've set O for Mouse button 5, and P for mouse button 4.
Works without any problems
(Also with all other games of course).
2nd: Maybe not possible...
P.S. Crack is now available @GCW:
http://m0006.gamecopyworld.com/games...eld_2142.shtml
Greets