How to Burn Dual Layer DVD Discs

I have a Lite-On DVD Burner model number SOHW - 1633S and i am pretty sure that it said Dual Layer on the front box. I am trying to burn a dual layer disc on Nero 6 and I even installed the latest ASPI, but it seems to be reading the discs as a cd-rom instead of a dvd rom and it said that the disc is unsupported by the drive. if anyone can help me it would be greatly aprreciated. Thanks.

Your gonna need
DL Discs
DL Burner
Burning Software (Nero or Roxio is my choice)
DVD Decryptor (Optional)

Now if you want to backup your legit copy of your game, then the easiest way is to just burn it straight off the source disc.

Method 2 takes a bit more times. DVD Decryptor to rip it as an iso. ISO is a DVD/CD image format, so go into Nero/Roxio/Burning Software and select Image Burning/whatever-it-is and just burn from there.

or you can simply use dvd decrypter, select read, create iso, select write, and burn your dvd
that easy