The pair of functions "in port" and "out port"in the Function\Advance\Port I/O can directly control the parallel port,I think it's the simplest way.With the pair of functions you can sent a byte or a word to the spcified port.You can chose the value of the byte you sent to control what a special pin in the parallel port.you can find the address of the parallel in the computer bios or through the property of the computer.
Best regards.
