This screen is used to create/view/edit the details of the State lookups. 

The fields are as follows:

Code - the code for the state. It is conventional to use the standard state codes, but you can in fact use any upper case letter string (eg VICTORIA in place of the standard VIC). Note that once you have created the State Lookup, you cannot change the Code - you have to create a new one, and then use the Replace mechanism.
Name - the name of the state
Default - check the box to make this the default state
Active - uncheck the box to deactivate the state

Suburbs tab - this is used to display and set the suburbs that are part of the state - use Lookup|Suburb to create these