Windows Eyes is certainly a good screen reading program for WIndows.  JAWS
for WIndows is as well.

I honestly don't see the need for you to make a change.  I will assume here
that you have support in place for what you have.  Changing would obviously
mean starting from scratch for what you already have in place.  I am not
saying that you should not get Window Eyes, because it truly is an
excellent product.

What I have seen done in the past is that if a student has been using a
particular program, institutions allow for the students  program to be
installed on the accessible workistation as long as that student requires it.

Dick
Dick Banks                      Adaptive Technologist - Consultant
       EASI Electronic Resource Manager - Universal Access  Consultant
        EASI  Equal Access to Software and Information
Universal Access  Online Workshop (Self Paced) - Adaptive Computing Online
Workshop
               http://www.rit.edu/~easi/workshops.html