Look at the forum
http://www.insanelymac.com/forum/lof...p/t238847.html

In essence: enter your camera's id's (vendor & product)
converted from hex to decimal

Example:
Logitech 9500

VENDOR (hex) 0x046d =1133 (dec)

ID (hex) 0x08ce = 2254 (dec)

Change the value for idProduct and idVendor in the category

IOKitpersonality -->
--> FakeBuilt-In iSight Device
--> FakeBuilt-In iSight Device Interface A
--> FakeBuilt-In iSight Device Interface B

Change the entries in these categories only, not the sub-sub categories!