Loading XML data with fade

Hello. I am trying to make a news editor that will pull data from an XML file and load it into a flash movie. The tricky part is that I want it to load only two nodes at a time, every 20 seconds, and than fade out and fade in two more nodes.

So in essense, only two pieces of info appear and than after a time span (20 sec) fade out and fade two new pieces of info.

Any help is much appreciated. Thanks!