Modules and configure

I am working on adding ViaVoice support to XEmacs as a module. I need to find the ViaVoice libraries, with configure. How should this be handled? Should I have a configure script in the module directory? If so, will the include of config.h via emodules.h still pick up the right config.h? Or should I ask to have the main configure script add ViaVoice detection once the module is ready? If this question is answered somewhere already, a pointer is sufficient. Thanks, -- Jerry James