I have 2 gadgets.

1. Plantronics pulsar 590A bluetooth headphones - it's passkey = 0000
2. i.tech bluecon bluetooth dongle for ipod nano - it's passkey = 8888

and they just won't pair

i'm lead to believe it's because their passkey doesn't match

so i'm looking for any brilliant ideas. Any got an suggestions on how to make these two gizmos pair?
(before i give up and send the nano dongle back to flashcards.co.nz)