You can download old versions of SUPREM and other TCAD software
>From
www-tcad.stanford.edu/tcad/programs/ftpable.html
Most of the software there is old versions
And I have tried many times to run it on windows(unsuccessfully)
However they provide also patches for UNIX

Spartaco Landi
PhD  Student
Microsystems & Nanotechnology Group
School of Industrial and Manufacturing Science
Cranfield University
BEDS - UK