Question on Burning some of these games...

[haxattax]

I would like to know if anyone has had success doing the following with the below games:

Return to Wolfenstein (game of the year edition)
Medal of Honor; Allied Assault
Jedi Knight II: Jedi Outcast

Has anyone (A) been able to successfully burn these games to CD, and (B) had any issues playing with others online in multiplayer with the copy of these CD's being used?

I remember reading a while ago that Half Life did not allow multiplayer to take place if duplicate CD KEYS were being used and I know the C&C games you can not use duplicates in a straight copy either.

Using NERO 5.5.9.17

Thank you for your comments in advance, much appreciated.