I've also bought a cable like this on ebay.. but it can't work because of the differents standards (I read..).
Also if Basic Stamp 2 should be programmed by a serial cable (rs232) I know that the board includes a rs232 to ttl converter. If I program the arduino to listen on the serial interface (I don't know how) and to repeat it on a different pin (connected to the other microcontroller) should it works?? Can you teach me how to do?? Thanks..!
(I want to use a basic stamp instead of the arduino because I bought it years ago.. and I want to use it..