I was wondering if any of you users using WIN 7, are using AMP_CTRL? I need AMP_CTRL to activate my PAC-TR4, which turns on all 4 AMPS by sending a stronger signal that the serial port can not produce. I know that AMP_CTRL needs specific .NET versions and I don't know of WIN 7 has the same ability. Can anyone confirm that they are using AMP_CTRL on their system with WIN 7.