Have you tried the following this guide?
http://www.xlobby.com/files/jowaldo/documentation/setupguide/index.htm
It is a little dated but the instructions are still valid if you follow the steps under the 'Basic' heading regarding movies. It should get you to the point where you can play movies through Xlobby. You should not have to make any changes to the ZoomPlayer settings in the filetypes tab other than make sure that the path to the zoomplayer executable is correct. This is covered in the guide as well.
I would probably leave DVD Profiler out of the equation until you get the movies playing first. All DVDP does is adds pictures and info, but it can also cause Xlobby to look in the wrong place when looking to launch a movie. Get the basics working first, then add to it.