You would need some sort of port access to control your BB, which I doubt will work due to BB's being so unbelievably strict with security especially in the connections area

But some sort of VNC where you could control your BB would be a somewhat primitive but viable method

Ofc it would be better if we could design an applet for BB OS that allows a Qt programmed app on our N900/N9/N950 to recieve new messages and send out messages all put together with a nice mimic'd interface of BBM.