I ran into some issues configuring my blackjack with activesync. I found however that using the Microsoft stack instead of the ones installed with the IBM drivers can make configuration easier. There is a great tutorial on “downgrading” to the Microsoft Bluetooth stack below.
Remember, it is much easier to configure the Bluetooth once Activesync is configured with USB.
The tutorial is located at: http://www.geekzone.co.nz/content.asp?contentid=3163
Some other interesting information is at: http://pdaphonehome.com/forums/samsung-i607-cingular-blackjack/82525-blackjack-bluetooth-activesync.html