This link will tell you all you need to know about RS232 http://www.camiresearch.com/Data_Com..._standard.html
If you have a serial port on your computer it should definately correspond to the RS232 standard, modern PC have a 9 pin D socket, older ones 25pin D. The link will give you the pin out, DTE/DCE refers to the hardware handshake pins and a Null modem cable has the approriate handshake and transmit/send lines crossed over and configured for one-to-one transmission with another piece of RS232 equipment or PC.
AL
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.