I have created a more interactive map of Faerun from some of the maps available freely on the Wizards of the Coast site:
http://www.blackwyrmlair.net/Faerunmap/
You can click on the relevant area to display a close up of that part of Faerun.
Most of the continent is covered. If anyone comes across any maps of missing areas or maps offering better detail please feel free to contact me with directions to that map and i will include in an update.
It should make things easier for those who have no idea in what direction Sembia is from Amn for example or where exactly is Mulhorand etc!
Rabain