Systems administrators have to be strong UNIX users, able to read and write bourne/korn/posix shell scripts, and programmers at times (Everyone wants to be a Wizard!).
In addition to the classes linked and described below, also consider the Programming and Usage classes.
If you are going to have to administer UNIX machines without the benefit of our instructors 15 years of experience, buy this book: UNIX System Administration Handbook (Evi Nemeth, Garth Snyder, Scott Seebass, Trent R. Hein) Prentice Hall.
Classes are most effective with 14 or fewer students, this allows time for individual attention. Select from below for full course profile. On mouse rollover a brief overview will appear in the text area.