Flash Communication Server Classes

I don’t see a section in the forums for Flash Communication Server. So I thought I’d just post it here.

If I have written a class file that works for my Flash swf files is there away I can also use them on the Server Side. Basically, I’ve written an RSS API that extends the XML class. And I want my server to be able to parse an XML document that I have sent it. And since I have a nifty RSS API to do it quickly and easily I want my server to do the same. Has anyone ever done this before.

I guess more to the point does anyone know how to write classes for Flash Communication Server?

Thanks,
Ryan