Installing ImageMagick on Fedora Core 5 is as simple as using the yum utility:

yum install ImageMagick

There’s a little information on this here:

http://www.gria.org/docs/5.0.1/user-guide/installation/services/fc5-pre.html

You can then test on the command line:

http://www.imagemagick.org/script/convert.php