Add tabs to Flash file

I need the ability to add tabs to the attached Flash file via an XML file. The size and style of the file should remain exactly as displayed in the file currently. ? I simply want to be able to add another tab or more to this file and also load external SWF files to it through an XML file. You can visit my website at [login to view URL] to see the present working file and an idea of what I would like to achieve. ? The file I want to modify is the one in the bottom left hand corner of the website.