Maya23DGS is junk. It's unsupported and not even worthy of being called in a beta state. It REALLY should not be listed on the 3DGS links page.
THere's the objsplitter which busts scenes into an actual wmb level full of mdl files. It's great. But the new version of WED should be able to import entire FBX files as level information soon. The objsplitter works with any app that supports multiple object OBJ files. It's only good if your 3D application supports longer object names, though, so there is space to embed your actions and skills into it.
