ArduinoCommander
jack_fr has made it, looks good!
http://arduino.cc/forum/index.php/topic,91261.0.html
Yay! you got it working! welldone.
As I thought, your module can:
•User can connect 3.3 to 5VDC and connect TX and RX to your control IO (general 3.3 to 5V digital input output of MCU or arduino IO is ok, or general TLL IO)
They're pretty indestructable 
You can connect them to 3.3volt or 5volt logic with no problems.
ah:
I really, really, really hate that BTInterface makes a sound when connecting and disconnecting. There appears to be no way to shut up the program.
This is exactly what I need, someone to constructively criticise so that I can figure out what people want and what they need to fine tune BTInterface to be the best that it can be.
Invaluable!
I shall put another panel of options in the settings (Menu button/Settings) where I'll make both the 'connected' annoying sound and the 'disconnected' annoying sound optional 
Actually I think I'll make them numbers so that you can choose your own annoying sound effects (or leave them blank for none).
Thanks Michael, please keep the ideas coming!