Bluetooth file transfer? (no authentication, no security)

hi all,
i just need a free software which runs as a bluetooth listener on PC
(or laptop),

what i need to do is;

Bluetooth listeners runs on a PC and waits for incomming connections
(which is going to be for file transfer)

Any kind of bluetooth enabled device (lets say phones, pocket PCs
etc.) must be able to send files to the PC (in my case i would like to
transfer images), and received images must be saved into a predefined
directory on the server.

Current tools have the same functionality, but i always need some key
pairing, authentication, and for file transfers we need to click on
some popups on the server etc.

is there any dummy bluetooth tool which just receives any file comming
from bluetooth clients?

any help will be highly appriciated, regards