I have a Windows Vista. What I'm doing with it 2 police scanners. 1. Is hooked up to the PC sound card and Using Pro Scan to record. 2. Scanner # 2 is hooked up via USB Sound Card but when I plug it in, I check the device manager and notice that device manager does not show up. When I go to volume mixer it's listed there. I need to be able to hook scanner #2 up to record on Proscan which you can, But in the program to change audio it says "Unknown" before there Microphone & Delkin forget the last name and both have been replaced with "Unknown"