The question you ask is too involved for a proper answer. You may want to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
The 2000 VW Beetle headliner is held in place by a retaining strap. The retaining strap encircles the entire roof. The retaining strap has approximately 20 screws holding it in place. Remove the retaining screws and the headliner will come free.
There is a small plastic circle piece in the headliner, behind the overhead lamp. you simply unscrew and pop it out and it exposes an Allen wrench override.
Full instructions and with pictures available at http://www.wlsheadliners.com/tutorials/volkswagon/vw_beetle_headliner_replacement.html
Pull the headliner and access in the middle of the car behind the sunroof. Or if you want just the antenna, not the cable-to-the-antenna, stand outside the car and unscrew it. very carefully
260 horsepower
code p1406 ford expedtion
A common problem with the 2000 Toyota Camry is sunroof drain clogs and leaks. These can be repaired through the dealership.
Remove the celling apolstry and going down the right and left front windshield supports are a set of clear drainage hoses for the sunroof.
Ford Explorer headliner replacement instructions check related link below.
The control arm that goes from the motor to the sunroof may have slipped, and is now out of time. You will need to remove any trim or headliner parts to gain access to the motor then move the arm to the proper position on the motor and re tighten the bolts to keep everything properly timed.
check an upholstery shop for sources...
First, find the motor for the sunroof. There will be a manual override on or around the motor that you can turn to close the stuck sunroof.