How to instatiate dif

We made a modification to the engine because we needed cliffs to be part of the terrain, and needed to add them in the mission editor. We created cliff DTS models and we extended the tsStatic class to create and manipulate them.

This is all nice, but the DTS doesn't blend all that nicely to the terrain with all lighting settings, so we're looking for solutions. One of them is to change it to a .dif instead of a DTS, but we are not sure how to fix what we're doing for the ts to work for the dif..

we do something like this:

class TSCliff : public TSStatic
	{
		typedef TSStatic Parent;
		protected:
			bool onAdd();
*****etc****
	}


	TSCliff * pO = new TSCliff(m);
	bool 
	ret = pO->setField("shapeName", modelname);
	/* set up a lot of variables, like rotation, position and the such */
******
	if (!pO->registerObject(name))
	{
		Con::errorf("addTSCliff: could not register addTSCliff");
		delete pO;
		return ;
	}
	/* create group if needed and add the object to it */
******

so what should we change the public TSStatic to? Interior? Or am I missing something? Interiors do not seem to be console objects, and this looks like it's going to make the migration a lot of work

thanks