From nintendo.com.au
"Australia, Melbourne, April 4th 2007 - Nintendo Australia, in conjunction with Telstra, is pleased to announce that Nintendo DS users can now enjoy Wi-Fi service to Nintendo DS at over 1,000 Telstra Wireless Hotspot destinations across Australia. Destinations include McDonald's Restaurants, Starbucks Cafes, airports, hotels and city hotzones throughout Melbourne and Sydney. Through the agreement with Telstra, Nintendo will offer complimentary access to Nintendo Wi-Fi Connection, the wireless gaming service that millions of Nintendo fans around the globe have been connecting to and playing online."
It includes a bunch of tram stops around melbourne too. I thought I found a map at one point, but I can't locate it at the moment.