The way I read it, oand wanted to supplement the existing FAQ with material in Norwegian - which would make the FAQ Admin MOD appropriate since you can add items to an exsisting FAQ in whatever language you wanted to type it in.
If you want the user to be able to pick a language, I'd see if Image has anything over at his site. (http://www.forums2001.ca/forum/)
When you add the MOD, one of the changes is to add a link called "FAQ Administration" to your Admin. Options - that's where you can add whatever you need to to your FAQ.