shit it is 14 years old. last year on my 93 i replaced the compressor. you need to do a freon conversion if you want to try and refill it yourself. But it is not really looking good for your AC system. it is old and shit.
that is my opinion.
PS, check all the underhood fuses and relays, the AC system has like 6 different fuses and relays for the compressor, fan, ect. Also get a $15 Hanyes, or a $65 Helms manual.
Good Luck!!