Fix It yourself. I REPEAT Fix It Yourself.
Goto the part dept. and buy the parts (their help is free!). If you are unsure, buy the TIS/ETK BMW disks off eBay.
You might also talk to the guys at
www.bekkers.com (they sell oem parts at a super discount). They may stock the control module.
It's all plug and play anyway. My Grandmother could do it.
Please send my normal fee of 10% of money saved, or $130 in this case to...