asterisk users - Jul 2004 - Example Polycom XML applications, anyone?

I know that Cisco 79xx phones support XML applications being launched 
from the screen, and I've seen that the Polycom phones claim to have 
the same feature.  Before I throw myself into the rat's nest of 
learning how to do it, does anyone have any sample XML applications 
for the Polycom phones, specifically integration with Asterisk 
(though any samples will do)?  The admin guide from Polycom 
disturbingly does not cover any applications or samples about XML 
authoring, which is making me nervous about my belief that XML 
applications are part of this SIP operating system on the Polycom...

JT