The easy job will be the family room floor. The harder job will be the bedroom.
I've enclosed a link with the details. See Squeaky Floors. If you don't know what the writer is talking about, say, "what's a toe nail?", post up. I know there are screws that can be used for both jobs but the brand name escapes me for the moment. For some reason, it's something like McAffeys, or MacAffeys. If I can find it, I'll mail it to you.