Library ADXL335

Hey, guys!
I'm programming a adxl335 accelerometer, and can't find how to declare the library. I downloaded the library on the link below, but can not find how to declare the code...
Thanks!

What link?

and can't find how to declare the library.

What does that mean? You declare a variable or a function, I have never heard of declaring a library.

Did you properly install the library? Are there examples that come with the library (almost always are) that you can look at?