It seems like you are facing issues with the Wireless PCI Card after upgrading to Windows 7 x64 from Windows 7 RC x86. Here's a troubleshooting guide to help you get your Wireless PCI Card working on Windows 7 x64: 1. Download the Correct Driver: - Since you mentioned that the Vista 32bit driver worked on the RC x86 version, try finding a Windows 7 x64 driver for your Wireless PCI Card. - Visit the manufacturer's website and look for the latest driver compatible with Windows 7 x64. 2. Install the Driver in Compatibility Mode: - If you cannot find a Windows 7 x64 driver, you can try installing the Vista 32bit driver in compatibility mode. - Right-click on the driver setup file and select "Properties." - Go to the...