1997 Peugeot 106 Key pad immobiliser lockout.

1997 Peugeot 106 Manual

My husband bought a Peugeot 106 P Reg a few weeks ago and it has a keypad immobiliser. Today he put the wrong number in and it locked him out. So the car wont start and he had to get a lift in to work. He needs the car for work and we dont have any money so we cant fork out for a huge bill. Is there any way around this like totally unplugging the immobiliser or something and how would he go about it. The priority is the car needs to start we dont care if the immobiliser doesnt work. I hope someone can help. Thanks