Thanks for the comments everyone.

K9krazee, This trick is a hard trick and takes a long time for them. They have to develope muscle memory and it's very unnatural. Here are two methods you can use. I used a mixture of both. Now when she got to the point of almost knowing what I want her to do I took a hear tie/scrunchie and wrapped it around her leg a few times. The pressure of it didn't keep her from being able to put her foot down but reminded her with pressure of what she should do. If she doesn't get it with the scrunchie I would go a step backward again.
http://www.youtube.com/watch?v=uraY7pmUSlw

One more method...

Teach your dog to LIMP!

Foreword: This is a very hard one to teach!
Directions:Start with having Rover on a leash. Stand in front of him and loop the leash under one of his forelegs, so you can elevate his wrist. Now gently pull on the leash so that he must elevate his leg. Now call Rover to you. ROVER, COME, LIMP. If he takes a couple steps with only three legs, praise him! Now let him rest and try again.
If Rover does not like being three legged and tries to pull away, get a second person to help you. Have her hold onto Rovers collar and leg while you call him to you.
Once Rover starts to get it, relax a little on the leash and have him walk a bigger distance. Now you can also try it off leash. Make a sling around his wrist and attach it to his collar. Now call him to you using the LIMP command. If Rover tries to walk on all four legs go back a step. If he does LIMP you can now remove the leash and try him. If he LIMPS, your work is finished! Good job!!!
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