Adobe Illustrator Help

I’m very new to Illustrator and need a little help doing something I imagine is fairly simple.

Basically if you take a look at http://driz.co.uk/logo.eps you will see a shape, this is just a simple vector path. I need to make it look like http://driz.co.uk/logo.jpg so the larger and smaller blades have different colors, BUT I’m unable to separate the two types, any ideas of the best practice to use? Explanation of menus etc would be great thanks.