97A6Q key cost and remote

[walian at att.net]

Hello all,

 I have just discovered that if I turn the car off really fast it releases the key if I do is normally it keeps the key. Would this be symptomatic of a bad key mechanism. I called the dealership and they want $450 to replace it, keying the tumblers to the same key. Interestingly enough my local shop wants $600. The part is about $150 at the dealership and 4hrs for installation. Has anybody replaced one and adjusted the tumblers to the same key as the original? What hassels can I expect if I do the job myself? 

As a side note/question I have an new remote that I got under warrenty from the dealership years ago and need to program it. Does anybody have instructions on how to do it?  

Thanks
Frank