Decrypter question

I currently have the one click w/ the dvd 43. i am thinking of buying the dvdfab platinum. i was wondering what decrypter i would need to run in the background with it. Are there any free ones like the dvd 43? i just had anydvd running and when i opened the dvdfab it told me i had to close anydvd for dvdfab to work properly. What does this mean? I am so confused with all of this. Does the dvdfab already have a decrypter in it? Oh, I also had the dvd region + css free running and the dvdfab platinum is the trial version.
Thanks,
Sarah

[B]NONE[/B] DVDFab Platinum is a all in one program and decrypters running in the background can interfere with Platinum causing failures.

Mack