Bluetooth connection suggestions
 

I've read a bunch of posts around the web with people having trouble getting bluetooth connections with their cars (and other devices). Here's what I did to remedy the situation with my Pioneer head unit and CD-BTB200. I hope it helps.

I've found that the MS bluetooth dll works better with many devices. I have the CD-BTB200 unit with my car stereo. For the Omnia2 I installed MS Voice Command 1.6. This installed the MS bluetooth dlls. Then I changed the following registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Bluetooth\Au dioGateway and set the BTAGPModule=<install_path>\vcbthag.dll
Where <install_path> is the path to the dll on your phone. One quick reboot and it was ready.

Set the phone for discoverable and the BTB200 found it no problem and it works great. I downloaded MS Voice Command from a post on this forum.