I downloaded this one
http://kryptovpn.kryptotel.net/download/index.html
After you install it
Log off Steam.
Launch the VPN select Australia and it will connect.
Log back on to Steam
Go to your library and hit play for Far Cry 3 (you should have Far Cry 3 pre loaded already)
Far Cry 3 will decrypt.
After FC3 decrypts it will launch Uplay
Uplay will probably have to update (this takes a little bit)
After it is done updating it will want you to enter your CD key that Steam will give you when you launch FC3
After that Uplay will show FC3 on its page and you click on it to launch it and play.
When you are done and quit the game, make sure to back to the VPN program and hit the disconnect button, otherwise your net will be slow for everything
The VPN I have linked above will give you a trial good for 3-4 days.
If you want to play FC3 some other time you need to do the steps above but you wont need to decrypt/update/downloading anything.