Most drivers / kernel modules would be loaded as soon as you plug the camera into the USB port. You should not have to do anything except start up your video or webcam application.
Did you plug the camera in and start up some software like camorama , or ekiga. or even skype ? you should try it
If that does not work could you please do the following so we can help you?
As the root user please run the commands below AFTER you've plugged the camera in and post what you see about the webcam device here.
Then we can tell you what kernel module "driver" to use : my first guess is that the 4atech camera is a gspca camera and should have no issue coming up in skype or camorama
dmesg ; lspci -v ; lsusb