I see that you posted here and in new member intro. I'm sorry that you didn't get an answer. I'm replying only because I wanted to give some other forum members a chance to reply.
The only thing I've paired with my iPad is a Zaggmate that has a built in keyboard. I believe the only bluetooth devices this iPad supports are peripherals such as keyboards. I'm thinking this extends to headsets so you can listen to sound on a wireless headset. But I don't think the iPad supports a Blackberry device through a bluetooth connection. I think you have to tether your Blackberry--but I also think that you have to jailbreak your iPad in order to use your Blackberry.