Ok, I have successfully imported the physics engine into my game and used it. But the problem is whenever I want to deploy the game on the phone, the physics engine's sample games also get deployed!
I tried to delete the FarseerPhysicsGame.cs and Sample folder from Sample XNA WP7 project, but an error shows up: "Unable to determine entry point"
Question is how can I prevent the Farseer sample games to deploy? Because I might want to put this game on WP marketplace.
and here's a picture of how I imported the physics engine files: