Hi mate. I know the troubles U R going in. :-)

Don't desperate. First of all, U have to export your dance anim. as *.bvh file (name it what you like) and later (when U had conformed your model)import the file as a *.bvh and watch the result.

Note : U may need some setting on the BVH to load right before use it. But first U need to load it to check. There are some BVH Editors around.
As well, there are many many motion files 4 download on the web.
Good luck and happy Posing.

Meexter Diel.