Grand Theft Auto 3 won't copy!!?

[welder]

Hey,
I can backup all my games accept GTA3... a friend of mine told me that they are putting a thin layer of something on the bottom of PS2 games so that you can't copy them. Nero burning rom won't even recognize GTA3 and just tells me that it's not a valid CD. I can get smugglers run or madden2001 to copy but GTA3 just won't. Does anyone have any idea how I can copy it? I also noticed the cd has a silver back not the dark purple or blue like the other ones.

If anyone could help me it would be greatly appreciated.

Thanks,
Sean