You have to remove all of the screws from the door panel itself. I remember two behind the door pull and the others behind the caps all around the panel. There is also another screw behind the black door handle plate. Just use a screwdriver and pry it open, then unscrew the screw. The door handle is also held on by plastic "pop rivets", so be careful when pulling the panel from the door frame. Make sure you use an up and out motion when doing so.
I think your problem is related to the white plastic (teflon) traveler that rides in
the metal guide.
Here's basically what happens when u roll the window up and down:
There are two separate cables which wrap around a plastic capstan (pulley like
mechanism) in oppsite directions, then pass thru conduit guides and end up
being molded into the teflon traveler--ea cable has a small metallic cube attached
to its end. What probably happened is the cable that pulls the window down broke
loose from the traveler.
As far as the regulator, mine did the same thing. I had to replace the regulator because the cable in the regulator broke and became gnarled beyond recognition. When you get the new regulator, make sure you compare the two and replace the housing with the old regulator. It is a pretty easy step (you will notice what is missing on the new regulator).
If you like preventative maintenance, replace the door handle pins, they tend to break on older cars. It is only a $5.00 part but saves you a whole lot of trouble in the long run. I cant remember the part numbers but I will look.
Let me know if you need anything else.
Dee