Dice Roll Game Problem

[El Tigre]

Okay I recieved this problem from a friend and we both got different answers when we did it. Ill save my answer for now and see what you guys get. If this is elementary I am sorry.

In this game two dice are rolled. Everytime a 6 is rolled you win $5 and the game starts over. Everytime a 7 is rolled you lose $5 and the game starts over. Every other value no money changes hands and you continue until you roll a 6 or 7. What is the EV per roll, and what is the EV per game, if they are different.

Thanks a lot