I need help with DvD Decrypter

Ok I downloaded Night at the Museum and it is an .iso file. I've downloaded DvD Decrypter (the newest one) and DvD Shrink. I read the guides but it wont work...When I open Decrypter where it says Source I can't find the drive I've mounted the .iso file to so I can't decrypt it can anyone tell me what I'm doing wrong and give me a step by step guide to decrypting and buring the .iso movie? Thanks for all the help!

 

As far as I know "Night at the Museum" is copyrighted. Downloading it without paying is illegal and anything related to it can't be discussed in Major Geeks .

 

Ask on videohelp.com. Somebody on there will probably know how to do it.