Please can someone advise me on how to change vectra c rear suspension arms? I have watched this video and found that I have major play in both rear wheels... I've also watched this vid and confirmed my worries...

http://www.youtube.com/watch?v=h-LF-qQY-Lc

Aany advice welcome... There is no 'How 2' on how to do this, might be a suggestion...

Mnat thanks in advance..