Xml photo gallery

Hello

If anyone can help…GOD i would be happy!!..I have come into contact with XML for the first time via the Kirupa Tutorials…and used the brilliant piece of code to make a photo gallery that loads the external files via the xml code…and everythings working…WONDERFUL!!!..however the gallery always starts at image 1 and I was wondering if there was a way to start the photo gallery (using a button) at say image no. say…21?..does the piece always have to start at image 1…Im not sure how to speak to the XML file via flash and am willing to try and understand ???..as much as my brain can understand that is!!!..I gotta feeling this aint simple…but if anyone can help I would be most happy…I can always copy/paste the AS and XML code if needed… mamamasonic