How to apply two gradients to one vector in Illustrator CS5?

So, I want to make an iPod and apply a vertical gradient so that the top and bottom edges appear lighter, AND a horizontal gradient so that the sides appear lighter (to give a 3D effect) on the same vector? How do I apply two gradients on the same vector? Can I do this?|||Each gradient will have to have it's own vector shape. You can layer these shapes to have a very nice realistic 3D appearance.