Hi there Doomforce , welcome to the forum.
First of all you need to check out if the cd-roms you try to backup do have some kind of copy protection.
To leave some fun in the research i will not post links in this message , but encourage you to use the search button , google or the other various engines the internet has to offer.
To check if the cd-rom does have a copyprotection i would recommend the usage of the program ClonyXXXL.
If you now know the copy protection , it's best to follow some leads in the other forums on how to try to copy these kinds of cd-roms. We have set up a CloneCD , Nero , Alcohol and various other forums for this. There is extensive help for all kinds of copyprotections such as SecuRom , SafeDisc , etc.
Good luck and if you can't find anything , you're free to ask of course.