I am building a half dozen links pages.  Originally, I created individual pages, used a drop-down selection that linked to the respective link pages.  I then thought of the IFrame module, though still not clear how to use it to its fullest.

I was thinking that rather than navigate away from the page and adding the drop-down to each of the link pages, it would be nice to have the links display on the same page...for example, select 'page 1' on the drop-down and it displays 'page 1' links on the same page; select another page, say, 'page 2' and it refreshes the display to display 'page 2' links. Does this make sense? ..localized on 1 page rather than navigating to multiple pages.

Is something like this doable with the IFrame module?  If not, how would I go about doing something like this?

Terp,  I don't see any relation from your question and the IFrame module, so that's maybe the reason that nobody answers to this thread.

Don't try to solve any navigation with iFrame.