How do you resolve domains to different internal servers on bind- 8

[Jason Vanick]

We're running into a situation that looks kinda like this:
I appologize if this is a FAQ, but the mailing list archive search engine is
down and I don't know where else to ask this question

We have an Internet connection and want to resolve internet names.

We have another domain server that won't resolve internet names, but
domain info we need we'll call this int1.com

We have another domain server that won't resolve internet names, but
domain info we also need... we'll call this int2.com

I see that I can't configure the root.cache file anymore with

.                   IN NS   a.root-servers.net.
a.root.servers.net  IN A    X.X.X.X
     .
     .
     .
INT1.COM.          IN NS   ns1.int1.com.
ns1.int1.com       IN A    192.168.12.1
INT2.COM.          IN NS   ns1.int2.com.
ns1.int2.com       IN A    10.12.1.2

This worked on some versions of bind-4, even though it maybe wasn't supposed
to.

How can I make this work in bind8?

Thanks in advance
- Jason (jvanick at hoffman.ds.adp.com)