The Linux Serial HOWTO tells about null modem cables. There are instructions for both minimum and full handshake cables with the pinouts for both the 9 and 25 pin connectors.
The URL straight to the section that tells about null modem cables is http://sunsite.unc.edu/LDP/HOWTO/Serial-HOWTO-8.html // Heikki -- This message was delayed because the list mail delivery agent was down.
