/usr/bin/convert: No such file or directory

Processing status...

- Adding katecol005.jpeg
Resizing/compressing original image
No resizing required
File /home/rockypic/public_html/gallery/albums/testalbum/katecol005.jpeg type 2.

Executing:

'/usr/bin/convert' -quality 90 -size 100x100 +profile '*' '/home/rockypic/public_html/gallery/albums/testalbum/katecol005.jpeg' -geometry 100x100 '/home/rockypic/public_html/gallery/albums/testalbum/katecol005.thumb.jpeg'

Results:
none

Debug messages::
sh: line 1: /usr/bin/convert: No such file or directory

Status: 127 (expected 0)
Error: Unable to make thumbnail (0)

What is going wrong here? I had my webhost install this via cPanal. Is there something I'm missing? If so, what is it, where can i get it , and how do install it.

thanks to anyone who can help.

J. Bourne
----
The following information is required to get an answer:
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful): http://www.rockypics.com/gallery/
Gallery version: 1.4.4
Apache version: 1.3.33 (Unix)
PHP version (don't just say PHP 4, please): 4.3.10
Graphics Toolkit: ImgeMagik
Operating system: Linux
Web browser/version (if applicable): IE 6