OK, new question. I am using Illustrator to make a drop shadow, but there is no option to set the angle of the shadow. It seems to always go to the lower-right. But what if I want it to go in another direction?
The attached screenshot shows a piece of my control panel rotated. I want it so if this piece is rotated 90° CW, the drop-shadow is in the lower-right. But as is, after printed and rotated the drop shadow will be to the lower-left.
I know this doesn't answer your question, but I usually just create a new shape for my shadows. For example, I just make a copy of the shape I want to have a shadow, place it underneath everything, and set it to black with a transparency. This usually looks okay. (Look at example below).
However, if you are set on using the "drop-shadow" effect, I think it would be better to wait and apply it in Photoshop once your vector work is complete. So, just import your ai file into Photoshop and use Photoshop to produce your final image. I know that you can easily change the degree of drop-shadows in Photoshop.
Anyway, that is just my opinion.