I encountered this problem tonight using a Creative web cam VF-0050 that I hadn't used since I upgraded from an XP machine to one running 64-bit Vista. Wasn't working at all, so I tried installing in "Compatability mode" which was suggested in another thread. After that, the "Creative Web Cam" application was opening up just fine, but still nothing I could do would get me past the driver issue. Finally noticed this "Creative WebCam Live! x64 driver 2.00.06.0000" from 2005, I suppose for 64-bit XP, downloaded it and next thing my computer recognized the camera... Checked it in Yahoo Messenger to be sure the web cam was detected and working there and all is swell. Found that driver download here: http://support.creative.com/... Live!&subCatName=Live! Cam/WebCam Series&CatName=Web+Cameras
Ben