Question about external domains and BIND

[jem]

Hi!

I'm trying to setup a WebDAV server for use in an office environment, to
essentially replace the Apple iTools servers, as described here:

http://www.drijf.net/dototto/index.html

I have the WebDAV server all up and running, and can read/write using an
authenticated account and read-only using no account (anonymous)...

However, to complete the setup, I need to be able to make www.mac.com and
idisk.mac.com resolve to another IP, which I'm having trouble doing in MacOS
X. I've read documentation and edited the correct files (/etc/hosts), restarted lookupd,
but it hasn't seem to have worked. I thought I might be able to somehow
configure the DNS server (on my end, but eventually the DNS server for the
office environment) to resolve www.mac.com and idisk.mac.com to different
IPs. Is this possible?

Thanks a lot!