I am new to Scalix so please be gentle

I did my first install last night (11.3.0.77) on Centos 5.0. Went well

Updating my contact info I was very surprised to see that, after choosing Australia as the country, the state drop down box included all states except the Australian Capital Territory - ACT. (For those who don't know that's where Canberra is, the nation's capital.)
How can I add this to the list so that it appears please?
TIA
jerji