there is one screw at the front of the door and I cannot get it off.

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Jeremy
91 rs, convertible, K&N, Edelbrock open element cleaner, 3.73, B&M mega-shifter, goodmark cowl-induction hood,tinted windows,MacEwen Overlays
Coming soon...non red interior with 4th gen charcoal/grey seats

 

Are you talking about the piece on the otside of the door? At the front of the door, there is a screw on the top holdin down the sound deadener. You may have to look for it. Remov that screw and pull the deadener back a little. I think you may need to take out the front window guide with the rubber triangle. I'm getting my car painted, so I took everything off.

 

You need a right angle phillips screwdriver to get to that screw.
There are two of them.
One is easy to get to and the other is further front on the door.
It's a pain to get at, just takes a bit of finess.
Side note:
If you are also removing the triangle by the mirror, I suggest taking asmall piece of masking tape to mark the position of the part.
That triangle can be a real pain when you go to adjust it for both the window and the door seal.

We have a 91 convertible and I had the same problem.