ah well, the joystick I use now works fine, and I got a lot of time used with soldering the whole stuff. It's MY pride, I made it work :lol:
I could also solder two leds on it, but they mentioned in the manual that you might need an extra external power supply :idea:
2 buttons SHOULD work though, the right mouse button works, (it doesn't matter on wich of the two connectors you put on the joystick or mouse)
anyhoo, thanks for advice :-)