Fly to the Lima Aeroporta Internacionale, exit through the south gates and walk sixteen blocks to the west. Ask the mustachioed man with the tacos for Carlos. Do whatever he says. Once he sends you to Carlos (don't forget the password), convince him you are not buying drugs. He will then fix you up with his brother, go back to the airport with him. He will take you up and push you out in a kayak. Remember to make sure your parachute is securely fastened.
Once you have a picture of yourself parachute-kayaking through the Andes, go to edit your profile by clicking your name at the top right, and click Browse. Click the picture you want and click open. Then go to the bottom of the screen and click Save Changes.
I have been trying to change my avatar with no success. What's the secret?