Update Bind How-to please Freebsd

How do I safely update Bind from 8.3.2 to the latest?

I've read this page
http://www.zytrax.com/books/dns/ch5/

Here's the questions.
1) do I need to uniinstall before installing the new version?

2) I assume I need to copy the changes in named.conf accross (well atleast make a backup before hand.)

3) are there any other issues with doing the update?

what version of freebsd? judging by the fact you have a very old bind there I assume its older then freebsd 5.3

FreeBSD 5.2.1-RELEASE #0
Apache 2.0 Handler
Named 8.3.7
ProFTPd 1.2.9
vm-Pop3d 1.1.6

The ports system will deinstall a piece of software prior to upgrading it. It will also make a backup of the port in case the upgrade fails.

Generally speaking ports do not overwrite config files. As far as i know you can keep on using the same configs after the update.

The info on http://www.zytrax.com/books/dns/ch5/ looks fairly complete. What is it you have trouble with?

Personally i wouldn't bother and just upgrade the whole OS to 5.4.

agree with floris if you upgrade to 5.4 or wait a few weeks and goto 5.5 you will get a newer bind anyway.