Need help with Plextor burner 16/10/40A please.

[lior]

Hello,
I am a beginner with burning and all. I have burned myself a few backups of games and of datat from hard drive.
I ran into problems when I tried to burn me a backup CD of a game called "Tribes" for example. ALso DIablo 2 cd 2 gave me trouble and I had to burn it at 4X speed.
I am aware that there are protections on CDs. But if I am trying to backup my CD how can I avoid this?
For example there are some "tracks" that cannot be recorded at all.
I am using Roxio WinOn CD 3.8 with this burner.

Thank-you,