rotate the object

i need a script for my object to rotate with the arrow keys...i have made my object to move up down left and right but i need it to rotate also....please help me!!!

This question was asked earlier, search for an answer before posting.

http://answers.unity3d.com/questions/51420/rotating-object

To rotate an object you need to do rotation *= Quaternion.Euler( angle x, angle y, angle z); full in your own values for the angles manually.

To link it to the keys, use the Input functions.