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You may wish to familiarise yourself with the simulator and the operating system. It's relatively simple; just avoid using the keyboard except for only letters and numbers to type, and use the simulator's buttons for everything else.
The first thing you should do is to test network connectivity by going to the browser (the fifth one along in this screenshot) and try Google or something. It should work, provided you've got MDS running in the background as your network bridge.
Please read the disclaimer! You can find this and more, including the explanation - as well as the pro's and con's of using spoofed geolocation on the ZDNet iGeneration blog.