Thanks for the post but that didn't help. I tried using a wired adapter (radioshack) that had no microphone to see if it would then use either the phone or the bluetooth mic but it didn't use either. I also tried messing with the bluetooth registry settings (
http://msdn.microsoft.com/en-us/library/aa915920.aspx) to no avail. It's sad that there seems to be no settings that allow you to specify how the audio gets routed - at least not that I can find.
When wired battles bluetooth on the omnia wired always wins.
To answer a call with my bluetooth in my car, I apparently have to pull the headphone cable out first. How lame is that?