Drawing - Interfaces

I am fairly new to drawing in Fireworks or Adobe. I am looking for some guidance on how to draw interfaces for web sites.

For example:

http://www.bandbuilder.com/heineken/index.php

When the site loads, look to the right. I like the green graphics they used. Shadowed and highlighted. It gives it a “interface” look and feel.

How is this done? are there tricks?

Daniel