correct me if im wrong, you are into creating an application that sends a file to all the discovered devices
there are many ways to do this. if your discovered devices is in the combo box you could pass it into an array and perform your sending method until your array is empty. i recommend you to use BRECHAM OBEX and using the put in sending the files. there are examples in the codeplex(32feet) on how to do the sending of files.
I don''t know what the future may hold, but I know who holds the future.
jihmantiquilla