Ok,everything's fine but i'd love to be able to use the left stick button too (which is usefull for freekicks).
Is there anyone who uses a ps2 controller and made it to work?

Another PS2 controller [adapted to the PC] problem here. Ineffective right stick.
Have tried similar registry alterations to those mentioned in this thread (http://www.soccergaming.com/forums/showthread.php?t=148265), with no
positive result. Also went to look for the FIFA 06 gamepad configuration tutorial
[see the older forums] but the document appears to have expired or been
removed. Any help on how to resolve this would be appreciated.

You mean you've tried the whole "devdata" thing?
Tell me what you've tried and didn't work and i might be able to help you since i have no problem with the right stick.