Loadmovie unloadmovie

Hey…
I’m loading a swf into a movieclip and then (when clicking on a button) want to load another swf into the same movieclip…
The problem i have is that the both swfs now populate the movieclip…
I’ve tried to use the unloadMovie function but it unloads everything and the next command will then not load as it seems to have unloaded evrything from every mc…

unloadMovie (“videoplayer.swf”, “_root.holderMC”);
_root.my_loader.loadClip("/guestbook/guestbook.swf", “_level0.holderMC”);

I’m running around in circles!!! i had it working for a second but am not sure what i changed!! agghhhh!!

Any help would be wonderful… thanks everyone