Healiner Removal

I am installing a Sirius Satelite Receiver into my 2002 Windstar SEL and want to run the antenna from the rear lift gate up to the front of the car and am curious if there is anything tricky about dropping the headliner. Any help or sugestions would be appreciate.

Gatornut

It depened on if you have rear ac (which you prob do) so i dunno if the ducks are attached to the roof or headliner