Thanks for the info Ed.

I could tell before you told me you read a lot. That's my problem. I'm a fast learner but a slow reader. I'm not afraid of the EE stuff. (I was an EE before I went into programming about a year ago.) I just have to pick my focus. The first two books you mention sound like what I'm looking for. Do either of these discuss networking issues? If not could you suggest a book?

You've been a great help,
Todd