[Bradford] DNS help request

[Moanin]

Hi Folks,

I've just taken on some server reseller space for a project. As part of 
the "welcome" package from the host I've received this. Would somebody 
please translate it?

> If you wish to use our whitelabel nameservers please use the following:
> 
> - ns5.private-nameserver.net
> - ns6.private-nameserver.net
> 
> If you wish to use your own domain please use the following:
> 
> - ns1 => 205.185.112.60
> - ns2 => 199.195.255.60
> 
> You must also add "A Records" inside of your domain for the "ns1" and "ns2" records or this will not work.
> 
> ** DO NOT USE YOUR DEDICATED IP AS THESE SERVERS DO NOT RUN NAMESERVERS **

I think the first bit is pretty straightforward. ns5 and ns6 are the 
host's nameservers and are active by default, just leave them as is if 
that's my choice. Am I correct?

I have my own nameservers (rented). The second set, ns1 ==> and ns2 ==> 
has got me stumped. I want to use a subdomain as the hostname and am not 
sure this can be done in its own zone, hence whether it's possible at 
all with this setup?

A side note, if anybody needs a DNS zone for testing or personal use I 
can offer a free subdomain with a zone which will resolve to your own 
domain. Just shout. My email address should be viewable with this mail.

TIA,

Mike