How I get my radio working again??? on 1994 Acura Integra

Like a dumbass I disconnectwed my battery without plugging in a supplimental power source thru the cigarette lighter and I lost my radio sttings. I consider my self lucky just to have lost that setting...what do I need to do to fix this???

also, make sure that you can prove it's your car. most dealerships will ask for the registration and your driver's license to prove that it is not a stolen radio
2 more answers
You will have to take out your radio and get the number off the side of it then call acura to get the code to put in the radio.
You have to get the code for the radio. Only get three chances to enter before it locks out. I just put anew stereo in