Animation n00b Question

I'd like to take a model from within Warcraft 3, reverse the animations so that the walking animation is now the standing animation, and the standing animation is now the walking animation, and import it back into Warcraft3 as a custom unit.

Is that at all possible?

I'm working on a suspension bridge that would sway with the wind to a degree dependant on the number of units that are on it.

Everything works except in order to make it work, I'm moving the Unit little bits several times per second along with the individual parts of the bridge, and when I do that it resets the running animation however it does not reset the standing animation.

If there's an easier way to do what I intend on doing, then I'd be very receptive to that as well...certainly creating a second unit with reversed animations is a sloppy solution, but I'm more concerned with having a solution than it's sloppy-factor.