Never create a .local domain in DNS, Active Directory, whatever. The
.local TLD is reserved for mDNS (Bonjour in the Apple world). If you
ever have to introduce Macs and other Apple products into your
enviorment you'll have so many fewer headaches if you don't use
.local, and it's the right thing to do.

Anyway, it's been many years since I integrated BIND and Active
Directory, but it is doable. Your best bet is to keep things as simple
as possible thorugh. For example, have your local BIND server use the
AD DNS servers to resolve anything the BIND server doesn't know about.

-- 
Andrew S. Zbikowski | http://andy.zibnet.us
IT Outhouse Blog Thing | http://www.itouthouse.com