Peugot 106 anti theft device?

How can I bypass the anti theft device as mine has become constantly locked out. Can I reset it or can I bypass it as the value of the car does not justify the cost of a new one. The garage seem to be telling me I can't just fit a new one they have to put the car up on a computer. I feel its all boll*cks and I'm about to be riped off. Im not bothered about having the device as No one is going to want to steal my old car.