A VB application which presently reading some signals from the switches connected to the game port. I need to change the switches to either serial port or parallel port. Do any one has some ideas, that how can I open and read the handshaking signals of serial/paralle port. I do not need any data communication. The signals would be DSR, CTS, RI, CD etc of serial port or BUSY,ACK, STROBE of Parallel port. Please help.