Gary. I believe the problem lays with the program, not the computer. I also had the same problem trying to key with LPT1. Works just fine with a serial port. Appears to be some sort of timing problem. Van. K7VS -- Submissions: ct-user@contesting.com Administrative requests: ct-user-REQUEST@contesting.com WWW: http://www.contesting.com/ct/ Questions: owner-ct-user@contesting.com