Wanted: advice on a good C textbook

[ENRIQUEZ]

While on this subject, I have been looking for a good text on the subject
of multi-user systems (i.e. games) programming.  The closest thing I have
found so far is a small section on the <curses> library for the school
system here.  

Since this seems like a rather advanced (?) subject, any related 
material would also be greatly appreciated...

Thanks.... me