Hi christine,
A while back Teva Neuroscience gave me an exercise DVD because I'd taken part in a survey.
It seems to be an excellent program. One part is tai chi, and the other is yoga--for people with MS. The participants demonstrating the exercises all have MS.
You can find out more about this DVD and other MS exercise DVDs if you go to:
http://www.msawareness.org
There are several other DVDs for sale there.