Hi Gerardo. I sent you some files as you asked.

The following things are important:

1. What type of hardware are you using? (complete description of all devices)
2. Are you saying you can't get characters on Windows Hypterterminal (i.e., can't transmit data?) I had similiar problem, I was unknowing sold a null-modem cable when I asked for straight.

*Please look at the files I sent for simple serial setup...and hopefully to establish communication with your PC. (should be pretty easy, once you get it right)

Good luck, you'll get it :)