Adding Thumbnails

[COLOR=black]Hello everyone my name is Tom and I am new to this forum. I recently came across this turorial for Photo Gallery[FONT=Verdana]** Using XML and Flash(Adding Thumbnails)** and I want to make some changes but am unsure how to go about doing them. I want to make it into a 3 line grid instead of one single line of thumbnails. how can I do that. Thanks for the help. :-/ [/FONT][/COLOR]