Open the console/terminal window
Winxp - click 'start' -> 'run' Type 'CMD' in the run bar then click 'Ok'
Vista + Win7 - Click 'Start'�Type 'CMD' in the search bar then click 'Ok'
Mac - Click 'Hdd' -> 'Applications' -> 'Utilities' -> 'Terminal'
NSlookup commands:
-q (set query)
=X (Where X = DNS record type, i.e. A, MX, NS etc)
Example NSlookup string:
Nslookup �q=a serversnack.co.nz