who would make more money a computer networking specialist, webdeisiner,or a networksecurity specialist?

Answer 1

Network Security - its big right now, especially with Sarbanes Oxley compliance

Answer 2

Network security would probably be your most lucrative. That said, a top-notch web designer could probably earn more though you'd have to be the best of the best.

All three career paths pay very well. It's not unusual to make a Masters Degree salary with a High School education backed up with solid computer skills and experience.