dynamic loading per namespace

hi all, i am working on a little php soap application (using Pear::SOAP). These application will have several namespaces (the first part is fixed) - each namespace gets handled by a php class with the specific methods for this namespace (eg. namespace mozsoapapp#User or mozsoapapp#State). At time i am loading all the php classes - and i am registering every class to my SOAP Server. But, normally not every class is needed - so its wasting ressources with unneeded classes. So, is it possible to load the classes on demand ? - Or, simple pass the POST_DATA to the soap server, get back the namespace which is needed - load the corresponding class - pass it to the soap server - and then execute the soap server ? Is this somehow possible - or do i have to hack into PEAR:SOAP to get it working ? best regards Wolfgang