Ansys Compostie Shell99

Hello.

 I'm attempting to model a thin composite laminate plate in ansys and
after searching this website and using the ansys help, I have chosen to
use shell 99. However when I load up the Ansys 8.0 software on the
university computers (I am a student), I can not seem to find the Shell
99 choice, or in fact any of the other possibilites, such as shell 91,
shell181, solid 46, or solid 191.

 Just wondering if anyone would know why this is the case, I'm
hoping that it;'s not because it's a university edition or something.