conversion to image format

I have a GEMPAK grid file that I'd like to convert to image format and
view using the satellite IR color tables.  I was wondering what the best
way is to convert a grid file to an image file that can be viewed using
the IR color tables?
Thanks,
Megan

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Megan S. Gentry
Graduate Research Assistant, Forecasting Lab
Department of Marine, Earth and Atmospheric Sciences
North Carolina State University