Linking a url to MC

I have created a site in Flash at:http://homepage.a5.com/~midillini/
It consists of 16 .swf MC’s that load into an index page.
What I can’t figure out, is how to code a link inside one of the .swf pages to open a new .swf in that MC.
In otherwords, how do I code a link that resides in about.swf to open in place of about.swf in the main movie?
Do I have to give it an absolute URL?
Appreciate your help and hope I’ve made myself clear.
Thanks,
palgraphpres