saving gifs at 400 dpi

Hello everyone:
Excuse my ignorance but is it possible to save a .gif image at a resolution
higher than 72 dpi?  I have a client who wants to receive her image as a
.gif file at 400 dpi.  Everytime I try to save it that way (in Photopaint)
it shifts back down to 72.  I have no trouble keeping the .cpt file at
400dpi but when I convert it to .gif, the .gif file always shifts back.  Any
advice?
TIA!
Blue



Blue Tapp
Blue's ArtHouse
blue(at)bluesarthouse.com
www.bluesarthouse.com
Over a decade of professional computer graphics,
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