I'm using Maya for animating the 2D characters in a game I've been working on and I would like to be able to export the keyframe animations and the skeletal systems as some sort of an XML file so that I can read those keyframes in my game and have the game interpolate between them. The issue I've come up against is that I can't find a working exporter script for this.
Could someone point me in the right direction, or is there a better method for visually creating these animations?
I'm using C# with the XNA 4.0 API for the game and I previously did character animations by hard coding them into the game, but this was way too time consuming and looked horrible in the end anyways.
I've heard that Zombieville USA used Maya to animate they're 2D characters, and I've read this page already as well on this, but they apparently used flash, which I don't have and don't have the money to pay for.
If its relevant, I'm using the student edition of Maya.
Any help would be appreciated.

This looks more like a Visual Arts type question.

EDIT: seems like the move got lost in the crash. Moving again