Lightscribe driver not found?LG-DVDROM GH20NS15?

I have a LG DOUBLE LAYER BURNER(HL-DT-ST-DVDROM GH20NS15)I downloaded the lightscribe software and install it,and when i run control panel/system information/i get message:NO LIGHTSCRIBE DRIVES FOUND…
Does anyone on this forum have a solution to my problem???Any sugestion would be greatly apreciated!!! thank-you in advance…

That drive does not support Lightscribe, the GH20LS15 does.