Try doing a search on ATC Recruitment. There are several old threads which you may find useful.. .Here's a couple for starters.
<a href="http://www.pprune.org/ubb/NonCGI/ultimatebb.php?ubb=get_topic&f=6&t=001014" target="_blank">thread1</a>
<a href="http://www.pprune.org/cgibin/ultimatebb.cgi?ubb=get_topic&f=6&t=000459&p=" target="_blank">thread 2</a>
. .You may also find <a href="http://myweb.tiscali.co.uk/radar2001/resources/ATCO1.htm" target="_blank">this web page</a> useful. It is for UK ATC but the sample tests and interview info may be useful. The interview is Aus dont really ask that much technical information but it cant hurt to learn.
I am happy to answer questions by email.
[ 10 February 2002: Message edited by: willadvise ]</p>