Serial Monitor to LCD

Hi Guys, I'm really new to Arduino (I'm only 12).
I was wondering how to change the code so that instead of outputting info to the serial monitor it outputted it to my lcd instead. My lcd is the Hacktronics 20x4 white on blue lcd. I would like to do this with my PING))) sensor so that the inches and centimeters came out on the lcd screen.
Thanks, Corey

Scroll down to examples. You should have these examples in your arduino IDE.

Here's a shield I made for 16*2 LCD:

You can download some codes I have on my blog if you have gone through the arduino included example.