I am very new to virtual min and i am migrating over from cpanel, when i installed cpanel it used my domain (lets say) , domain.com and created a name server to go with it ns1.nameserver.com does virtualmin do the same thing?
keep up the good work!

Virtualmin gets name server information (automatically) from two places:

The hostname of the box you're running it on (which can be named ns1.domain.tld, or whatever)

From any slave DNS servers setup using slave cluster features of the Webmin BIND module. See this guide for how to setup your extra name server(s):

http://www.virtualmin.com/documentation/id,dns_slave_auto-configuration_quickstart/

You can, of course, specify any name server address you like in the Module Configuration, and you can add as many additional NS records as you want to the Server Template in the BIND DNS Zone section.

So, the answer is, I guess? I don't really know exactly what cPanel does in this case.

the name of my box is domain.co.uk so does virtual min automatically create a ns1.domain.co.uk?