*.fmt file format!!

Hello everybody...

  I have a CD with *.fmt, *.cad, *.gis extention files for Mexico; the readme file
and all other *.doc files are all in Spanish, which is the language that I can't
speak nor read!!!!. I need to know what format these files are in, and what GIS software
could read them; I need to display some of these files in grass or ArcInfo!! and do more
work with them!!

Any help is highly appreciated.

Thanks!

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Abeer AL-Naji
GIS Specialist
Texas A&M University
Blackland Research Center
e-mail: alnaji@brcsun0.tamu.edu