Is there any extension or program I can use for CentOS to make 4 jpg's into an animated gif?

I figure I can just call the program from php's exec command.

Is this possible?

ImageMagick convert would be the obvious choice - start here (http://www.cit.gu.edu.au/~anthony/graphics/imagick6/anim_basics/#gif_anim)

I didnt know ImageMagick could do that! Thanks, problem solved! ;)

Option B:

http://technobabbler.com/?p=12

Even cooler as a requirement-neutral solution, you can do it with javascript and dojo. See http://archive.dojotoolkit.org/nightly/tests/widget/test_AnimatedPng.html

(could be applied to jpeg)