Two questions:

Is wireless as fast as hard wire?

I say wireless isn't as fast as wired.

Does server 2003 have some sort of control features over all programs installed that if two people make changes to doc's or whatever programs you use on the server it makes both changes or does the software do this itself and server has nothing to do with it? If you can understand what I'm saying.

I'm saying that the server has nothing to do with software you install on it other than making it available to multiple users and the software itself has to be designed to let 2 people work on it at once and both changes be made at the same time.