> Is there a "HowTo" somewhere that can help me easily create a bind "Cluster"
> (for want of a better word.)
> i.e. Make a change on ns1 and the change will also reflect on ns2...

Yes. It's called slaves. Set up a notify on the master and any
changes will be updated on the slaves. The config file (IIRC) has an
example of this.

I'd recomend 2 books to get you started (both from O'Reilly).

"DNS & BIND Cookbook" will show you the *how*

"DNS and BIND" will make you understand the *why*