What have you tried? Can wire and read a switch? Can you connect and print to the LCD? Which LCD?
The way that works the best here is if you try to write the code and when you have trouble, post the code, describe what the code actually does and describe how that differs from what you want the code to do.
Please read the "how to use the forum-please read" stickies to see how to post code and some hints on what we need to know in order to provide the best help. See #7 and 11.