Table View loaded from a nib file

[NSpehler]

Hey guys,
In my application, when the user launch the app, it shows a map. I've got a button above the map that -should- open a new view that contains a Table View.
The problem is that I found a lot of tutorials on Internet but they're all talking about how to load the table view using the MainWindow.xib and I can't do like that because my MainWindow.xib is loading my MapViewController.xib.

Any idea how I could do this ?
Thanks.