The modules software has been installed and setup (thanks to Robin).  I've
tried it in both the bash and tcsh shells, and it seems to work.

I've only created one module file so far - for pbspro-7.1.  There is also
one called simply pbspro that is a link to it.

For any other software that is installed, I can setup module files, or
explain to people how to do it.  The information that is needed is:
- descriptive name for the module file 
- short description (displayed when someone uses module whatis or display)
- longer description - usually the short description plus info on what
variables are set or modified by the module file.
- any environment variables that need to be set - for example for PBS I set
PBS_HOME
- any environment variables that need to be modified (have additional values
prepended) - things like PATH, MANPATH, LD_LIBRARY_PATH, etc.

Let me know if anyone finds problems with modules. 

Dave