Hi all!
I've manage to discover what kept the Widcomm stack from accepting files from the 7650 back to the PC. Using an utility that came with my dongle (BtServerSpyLite) I've manage to discover why some of us can send info from the 7650 to the PC and others don't.
Using the Spy tool, I discovered that the bluetooth stack determines the what is the file type it's about to receive . That's why you can send a contact into your PC and not an image.
So, tweaking with the registry, I've manage to find the correct key that makes this work:
HKEY_CURRENT_USER\Software\Widcomm\BTConfig\Services\0004
In this key folder, you'll find another key, named:
"AcceptOther" <-- that (on those that cannot send files is set to '0x0000000'😉
Just set this key to 0x0000001.
Some folks actually don't have this key (AcceptOther), so that's why this worked for some and others didn't.
I just don't know about potential security risks, but I believe that if you set a notification whether to warn you about files being sent to you computer to be sufficient.