If .swf loaded! else you help me!

I have a problem I am trying to solve. I have several movie clip embedded into each swf file. I did this to reduce the size of the main file, but I am trying to control each movie clip with a play, fast forward, stop and rewind button from the main file. I know the easy way out would be to create these buttons directly in each movie clip, but I thought I might be able to create a set buttons that control all the clips from the main file. Now, can someone please give an example of an “If” code for loaded .swf files. i.e

 on (release) { 
if (sweet.swf loaded) {
"gotoAndPlay instance on sweet.swf"

Thanks for your help