To use the iuthesis document class, download the following two files:

	iuthesis.ins
	iuthesis.dtx

Run latex directly on iuthesis.ins.  This will create two files:
iuthesis.cls and iuthesis.tex.  The former is the class file; put
it in the same directory as your thesis, or in some directory latex
will look in for input files.  Run latex on the latter file to get
documentation.  You will have to print the documentation file, as
there is a rotated figure in it that xdvi cannot reproduce properly.