Dual pairing in OS X and Windows

If I understand the bluetooth pairing process correctly, the MAC addresses of a bluetooth receiving device (the bluetooth adapter itself) and a bluetooth emitting device (in this case, the Magic Trackpad) are paired shared a randomly selected 16-bit link key. I might be wrong, but my hunch is the link key is stored (possibly encrypted) in the Trackpad itself and, additionally, somewhere in a file in OS X (com.apple.bluetooth.plist???). After pairing the Trackpad with OS X and booting into Windows (using Boot Camp), the link key (stored in the clear in the Windows registry under System\ControlSet???\services\BTHPORT\Parameters\keys, followed by the bluetooth adapter MAC address, then the Trackpad MAC address and then, as its value, the link key itself) will be different from the one stored in the Trackpad. For them to be the same, pairing is required, thereby destroying OS X pairing, et cetera.
So, put in a nutshell, for dual pairing to be effective we need one of two things:
Apple could provide either OS X or Windows tools capable of reading the relevant link key from one system and writing it into the relevant plist or the Windows registry.
Someone could let us know where exactly the blue tooth link keys are stored in Snow Leopard, so that the relevant OS X link key can be copied to the relevant entry in the Windows registry.
Advice will be most welcome.

If an Apple engineer has read this, it appears they aren't willing to share their knowledge. Be that as it may, this is what I've discovered so far:
The Snow Leopard link keys can be found in /private/var/root/Library/Preferences/blued.plist. This file can be opened with a Pist editor. In my case, it contains a couple of entries (couplings) for my only Bluetooth device, i.e., the Magic Trackpad, whose MAC address is paired with a couple of entries, which I supposed are MAC "identities" of my Bluetooth USB receiver. The Plist editor shows one 16-bit hex key for each pairing.
Now, in theory, these keys should be copied to the relevant Windows registry entries in Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BTHPORT\Parameter s\Keys\
(these entries MUST be accessed running psexec -s -i regedit.exe).
There are two main entries under ...\Parameters\Keys, each coinciding with what I presume are the two (?) MAC addresses of the Bluetooth dongle. Under each of these entries there's a REG_BINARY key whose name is the MAC address of the Magic Trackpad and whose value (the Bluetooth link key both devices share to communicate) SHOULD be made the same as in blued.plist.
Unfortunately, the operation doesn't work. Now my Windows registry contains the same link keys as my blued.plist, but the Magic Trackpad doesn't do anything in Windows (and I don't want to pair it again, or I would be forced to do the reverse operation in blued.plist.
I must be missing something. Are the link keys in blued.plist to be interpreted as big-endian, so that bits should be swapped in the Windows registry? Any advice will be most welcome.

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Message was edited by:
SaravananMandala

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