If you're trying to view the contents of an ISO, you can't just view it from a backup disc. You have to rip the ISO to your PC first, using IMGBurn or other program, and then use WiiScrubber to view the ISO contents.
Your post doesn't really make any sense, so I'm not sure If was even close to answering your question. Try explaining exactly what your trying to do, what doesn't work for you, and ask specific questions about your problem.