If you have a WIFI adaptor this might be a help. http://www.freewifi.com.au/index.htm
I think the free WIFI hotspots might have been a bit short lived. Through Bigpond on roaming I think they charge about $5 per 15 min session.
If you don't need to send attachments or open them, you might want to try something like Blackberry (had good coverage across the country with mine). Can be expensive on the wrong plan though.
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