Teekay your suggestion did work but when I tried to open the machines the game crashes so the mod needs both mod_ZZZmissile.class files. Somehow the name need to be changed and also when I added the new ic2 file to the ic2.jar forge didnt like it.
I'm sorry that it doesn't work. If you can wait a few more days then I'll post an updated RocketScience which is more compatible and SMP(!). I'm hardly working on it