yaaaaaaaaayyyy!!!!
i finally figured it out!! the BB curve 8320 is my first BB device and ive been pissed off about that problem ever since I tried to send a ringtone over from my previous sony ericisson m600i..
while messing around today i noticed something in the media player area (where u can view all ur pictures and ringtones or whatever)... if u go to ur menu there theres an option "receive via bluetooth" click on that ur phone will be ready for data transfer
i dont know why they did it like that but hey as long as it works...
i havent really tried sending files other than pics and mp3s but those definitely work...
enjoy