The AOLserver folks have promised me that they will be releasing some XMLRPC code they wrote on top of tDOM. Considering the quality of their work which (judging by their webdav code which we built on) is very good, I hope this can be a good solution to your worries, Andrew.
I've been waiting for a few weeks to see the code because the AOLserver folks are overwhelmed and want to give the code a lookover before they release it. Hopefully it will be soon, though.
talli