How to tether an iPhone 3GS to a Windows Vista laptop via bluetooth

Does anyone know how to tether an iPhone to a Vista box over Bluetooth PAN?  Others have had success ignoring missing driver error messages and trying a connection regardless.  I am seeing the attached errors.  (I can tether over USB).
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I think its could be the driver. You should just be able to get the driver from the computer manufacures website.
idseeAuthor Commented:
I "fixed" this problem.  I removed the iphone bluetooth device, uninstalled the bluetooth drivers via device manager (left the files on the system) and re-started.  The find hardware wizard reinstalled all of the drivers and I re-paired with my iphone and everything worked.  Hmm...

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Yes like I said, it was the bluetooth driver.
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