Adding regions for a Forgotten Realms campaign

[Ravencloak]

All right, this bit seems really complicated, so I'd appreciate whatever advice/guidance I can get.

I'm prepping HL files for a Forgotten Realms campaign, but they've introduced the concept of character regions. Essentially, the region your character comes from is almost as important as his race. It determines one of the character's bonus languages, the availability of some feats (specific regions are prereqs for some FR feats), and affects some Knowledge skills.

So, how do I build in a new widget so the player can choose from a predefined set of regions? Or, do I need to somehow incorporate this into the races?