Please don't get upset with me if I am wrong Graeme but I'm sure I've read somewhere that if you press button 6 (and keep it pressed) BEFORE you switch the radio on you will get another 3 attempts to load the correct code. If you use up these 3 attempts and don't get it working you have to have it done electronically, which obviously costs money. This is only what I believe to be true, I don't really know so you may want to wait to see if anybody else knows for sure. Good luck with it.
Bigh, December 2009