I recently bought a W203 T-model from 2007 and my MB dealer offered me a complimentary genuine brand new in the box Bluetooth HFP Cradle.
See description here: Comand Online Ltd :: Phone Cradles & Adapters :: Mercedes Bluetooth HFP Cradle
I own a Nokia E61 which I wouldn't change for any mobile, but unfortunately this bluetooth module is unable to pull the contact list from this particular model of phone.
I need to change it for one of these: Comand Online Ltd :: Phone Cradles & Adapters :: ViseeO MBU-2 (MBU2000) UHI Bluetooth for Mercedes Benz
If anyone wants it the other way around i would be happy to change module with you.
Either way i have mine listed at ebay and am selling it for a very reasonable price as well: Mercedes Bluetooth HFP Cradle B67875877 on eBay, also, Mercedes-Benz, Car Parts, Cars, Parts Vehicles (end time 22-Mar-09 09:55:26 GMT)
If you're interested in a swap or in buying it just let me know.
BTW, the auction is in GBP because in Portugal we dont have a local Ebay site yet, so i normally use the U.K. one.