It sounds like you're encountering difficulties with capturing video after upgrading from Vista 64-bit to Windows 7 64-bit, particularly using firewire for video capture. It's frustrating when things that worked before suddenly stop functioning as expected after an upgrade. Here are a few suggestions that might help you troubleshoot and potentially resolve the issue: 1. Driver Compatibility: Ensure that the drivers for your audigy sound/firewire card are fully compatible with Windows 7 64-bit. Sometimes, drivers that work on one operating system may not work as expected on another. Check the manufacturer's website for updated drivers specifically designed for Windows 7 64-bit. 2. Software Compatibility: Verify that the video...