Forgot to say that the baud rate of the RS232 (serial) connection needs to be reduced to 9600. To do this just go to (in Win9x/ME) .... Start -> Settings -> control panel -> system ... choose the Device manager tab and then expand the Ports (Com + LPT). Select USB to Serial Port (Com x), select Properties, choose Port Settings tab, change baud rate (Bits per second) to 9600. Click ok, ok again. Finished.