I am running Windows 7 7100 (RC) and like it a lot. I am having a problem with the USB Serial Converter I bought to support a yoke, rudder pedal and throttle quadrant that I have. W7 recognized the hardware and installed a driver for the USB, but the caution icon came up (driver unsigned) and the emulated COM port did not appear. I came up with the idea of deleting the hardware with device manager and reinstalling it. It seemed to work for a moment (COM3 appeared), but the next time I rebooted I got a BSOD. This now happens consistently when I try to install a driver for the USB Serial Converter. I am running V7 7100 64 bit - see my profile for details. The USB-Serial Convert is from Micro Connections.com. I tried the drivers from their site - they did not work.