New to DVD Burning

[jc9668201]

I'm trying to back up all of my dvd collection but I can't figure out how to do it......I have a dvd-rw and I use the program RecordNow!......When I try to burn the dvd's i get an error that says something along the lines of "Copyright Lock" for every dvd I've tried.....can anyone tell me how to get around this....????