Loader Component - external SWF loads another

[msweeney]

I have a MAIN flash document that has an instance of the Loader Component with the instance name MainLoader. I've loaded an external SWF into the MainLoader instance...in that external SWF I want to have a link that opens another SWF in the MainLoader instance...effectively replacing the first external SWF with another external SWF.
Here's how I'm calling the external movies in:
on (release) {
this.MainLoader.loadMovie("http://www.cashcowmedia.com/services.swf ");
}

Thanks in advance!