Address book - backing it up?

Thanks Yuri. So just to confirm.... I should be able to use the "backup" feature under "General Options" in TLB Settings to save everything INCLUDING all the contacts I add to the Address Book?

Yes, this works too. Built-in backup saves all menus, plugins and shortcuts.

*Edit: Ok I misunderstood, but I think I got it now. On Windows 8, it would be under: username > AppData > Roaming > Microsoft > Internet Explorer > Quicklaunch > Apps

..and there I find "Address Book.tlbplugin" <<- That's what I need to save, right?

Yes, this file contains your contacts.