problem is that its a second hand radio. you have to get the chassis number from the original car it was fitted to, then you can get hold of a mate who is a mechanic and get them to ring the dealership with the chassis number. he/she can get the code for free on trade as is my understanding.
if you cant get the chassis number then ask the parts dept about any other options, but unfortunately your goose might be cooked...
Lloyd
May 2009