Without hearing everyone's jokes about the car type...I also have a BMW 750Li and I am having problems having my TREO 650 sync with the car. I tried Shadow's DUN enabler combined with YAHM and it still isn't working. Do I need to use a direct dial up to make this work? Maybe I'm not following instructions properly but all I am looking to do is make my 650 work inside my car. Can anyone give me a step by step process (and whatever I need to download and start over) to complete this task?