Help with xml objects

Hi all, I am trying to populate a movie clip with buttons positioned by an xml file and have info windows pop up when you hover over these with images text and links in the info window which needs to resize based on the amount of content in it, also from the xml file. Almost like google maps. (as2)
Any help would be would be great as im new to flash and have been pulling my hair out trying to do this!
Thanks in advance Oisin