only help i can give you is tell you what i had to do yesterday for mine.
stand straight:
1) try and touch your toes
2) keeping your back straight slide your arm down the side of your leg and repeat with the other side i.e. lean to one side.
3) tilt head forward and back then side to side.
4) arms by your side then move them above your head.
5) twist upper body to one side and then turn head further round to try and look behind you.
I've got no idea what the limits are though.
[ 04 September 2001: Message edited by: wobblyprop ]