Mirroring bones...

This is a different topic, so i started a new thread.
i hope it’s ok.
I joined the hands armatures to the body armature and the meshes as well
and now i’d like to use x-axis mirroring on the hands so i named the bones properly, pressed “x-axis mirror” but then…
http://img459.imageshack.us/img459/8362/xaxiscz6.jpg

If i extrude or move a bone in the left hand, the matching bone will move to the wrong side and to the wrong distance…

help? :slight_smile: