Loading a movie clip

I could really use someones help on this one!

In my services.swf file I have navigation buttons (which are their own movies) contained in one movie clip named button lineup.

What I want to do is have those individual movie clips load a movie clip on top of the main movie.

For example: When I click on logo / image creation in the button lineup movie I would like it to load another movie contained within that swf file. I would like it to load on top of the current movie.

Check out http://www.cashcowmedia.com and click on the preview our new site to see what I’m working on. I’m trying to duplicate the effect in the main navigation (the green buttons). Here the green buttons link to external swf files. I would either like my navigation in the services.swf file link to external swf files or movie clips within that swf file.

I have attached my swf file for reference.

Any help would be really appreciated. Thank you!