I have misplaced my A4 Tech webcam CD installer. I

Hello,

No Worries, here is the official download link of A4Tech,

Please follow the below link and download the drivers by clicking on "Driver for PC" located on left hand side right below the down arrow mark.

http://www.a4tech.com/ennew/download%20driver.asp

Also, please read the installation instruction and follow it for successful installation.

Cheers

Here is the linkl for A4Tech driver downloads. You can find the model for your webcam underneath the cam, then follow the instructions
http://www.a4tech.com/ennew/downloads.asp