Sending information to a popup?

If I’m creating a popup using this method:

(Or anything else, if it’s easier)

Is it possible to send information to another flash file in that popup? I’m building a little xml photo gallery, but I want the pictures to open in a new window when clicked. The path to the picture and a description is loaded from an xml file, is there a way to either send the path and description or send the reference to where to find this info in the xml file to the popup?

[size=1]Not sure if this is the right place for this…[/size]