I cant visit their website coz I've got IE7, which they doesnt support. Anyways, did you read the manual before installing the drivers for your Webcam? coz there are sometimes when you dont connect your product before installing drivers.....
I would suggest you to try this...
Go to Add Remove Programs in your Control Panel and remove every software relating to your Webcam. Then go to device manager as I stated above. If you see any driver related to your webcam then remove that as well. Remove the webcam. Insert the drivers CD, install all the drivers carefully. While installing if software requires you to plug in the Webcam then do it but if it doesnt then dont. After installing drivers, restart your computer. Plug in your Webcam and see if it detects... Good Luck