Controlling nested MC

i’m trying to give my users the ability to skin my website. to accomplish this I’ve got MC’s all over that have labelled frames with the different skin elements on them. some of the MC’s themselves are tweened and animated (i.e.-covers slide up and down). I need my skin selection buttons to lock those MC’s on the appropriate frame with the skin graphic on it…
I tried to just control the timelines with go to and stop but once the mc’s themselves are being animated/tweened, they default back to their first frame! any suggestions/alternative methods of accomplishing this?

thanks!