Photo slide show tutorial... thumbs?

http://www.kirupa.com/developer/mx2004/xml_slideshow2.htm

Hi… Im using this slideshow… but what I need is to add some thumbnails on the main page… what I have already done… I need the actionscript for the slide to stop, and go to the image the thumbnails represents… and I need an extra button, called play, so that on release the slideshow starts from the image that have been stopped.

please, I really need help