I looking for ways to protect files, including especially MS Office based files. Related note, best password vault?
You can download anything that can encrypt files such as files crypter or something similar, just search the market for encryption and see which one works best for you.
Sorry for the newbie question. I was able to find several apps. I am happy with Documents To Go by Dataviz, which supports password protected files very well, in addition to its overall smooth viewing and editing capabilities.