remote entry problem - help!

hello all!
I've got Buick Park Avenue (1993) and I have problem with keyless entry - it doesn't work. I know - it's forum for Bonneville owners but I've asked at Buick forum but nobody knew what to do. I live in Europe and I can't ask GM dealer (service) for help because the nearest GM dealer is about 300 km from here. Anyway I've changed the batteries in transmitter I've disconnected car's battery to reset the computer - it still doesn't work. I've tried to match the transmitter to the car (I've connected the pins under the dash - door lock and unlock then I press the 'unlock' button (on transmitter) to complete the procedure but nothing happens. What else can I do?One day the transmitter's unlocked the door but didn't lock them. Now it doesn't work at all.

Sorry for my poor english.Please help me!
Regards

Can you have a picture of the transmitter so we know what exact model you have? Here is procedure for a '93 GM model. May be it suits yours, may be not.
www.avigex.ca/xport/remote_program.jpg

my transmitter looks like this one:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7955384218&category=33723

model/fcc id:AB003037

Check all the fuses? In the bonneville there are additional fuses under the passenger side of the dash panel.

If you aren't getting a response from the remote, especially after reprogramming and replacing the battery, it might have finally died.