Hi, Thanks to those people who responded about my previous query - proved useful. However the next problem I have is trying to get my system to communicate with the data logging equipment on the serial port. I know the equipment works, however the software is having no joy communicating with it. How do you enable/configure the serial ports? I've tried using a combination of SetSerial and stty but to no joy! Thanks in advance! Cheers, Matt Legal Disclaimer: This e-mail is for the intended recipient only. If an addressing or transmission error has misdirected this e-mail, please notify the sender by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print or rely on this e-mail. The opinions expressed in this message are those of the sender and not those of Heworth Grange Comprehensive School.