This is an old Builder.com article (from May 2003), but goes into the guts of how to use XML in Flash. Might come in handy for Pachyderm...
On a side note, wtf is up with builder.com? They have a redundant .com in their address (builder.com.com - I assume that means they're part of CNet, famous for "news.com.com"), and the URL scheme they use is a huge PITA to type in (I had it open on one machine, and needed to get it to the other... Took way too long, and some apparent numerical dyslexia kept getting in my way. Doh.