Arduino servo code!

Looking for a coder who can work with the Arduino Duemilanove. I am currently making a project that i need a servo to turn at the same time and pace as a potentiometer, I will also need to be able to set 2 limits on the servo so it wont go past a certain point, these limits will be? controlled? by tow buttons.? For example set the servo to a point, press and hold button one and then the servo will not go past that point even is i? turn? the? potentiometer past it! At the moment i am looking to make it wired then make it a wireless unit!