Geoset Swap Animation

Okay, for my Pacman map, I have 2 simple models, a pacman model which is a complete circle, and a pacman model with its mouth open. Now Ive put each type of model as 2 seperate geosets in a new model. My question is, (and I bet its a simple answer, or just a link to another thread) how can I make an animation that just displays one geoset, then the other, then the first, etc. (I know how to animate with rotations and moving bones etc.)

Like I said, this is proubly a rather simple and dumb question, but I hope someone can just link me to another thread, or right down a simple description.

send me the tgas of both, the model (in mdl form) and ill return you with an animated texture that swaps between the tgas at a certain rate

There are no TGAs, the model is alpha so that I can change the team color easily for a special mode...So I dont think that will work.

U can play with visivility controlers for the 2 models then when u hide one u show the other. Only prob is that FOR ME, I dont know if this has hapened to u, when visivilitry is offf and I put it on in the middle of an animation it shows jumpy, dont know how to xplain, mmm the recent vicible object jumps a little from the center, maybe its just for me but its worth a try. OR BETTER TRY WITH OPACITY CONTROLERS, thats better I think.

or mabye you could plaec them directly on top of eachother, and make the animation where one scales slightly smaller... so it is invisible.