Board Thread:Support Requests - Getting Technical/@comment-5003660-20150326045537

I downloaded a Nirvana file from Wikipedia that I planned on importing to a new wikia of mine. However, I am unable to do so because I cannot find the folder that the file is under: AppData. I don't see it. ANd I went to mozilla support only to find out that deleting the file could slow down or halt my apps. What should I do? How do I find the file when attempting to import it? 