[Image-SIG] im.show() error

[Steve Kacenjar]

I have just installed the Python Imaging Library (PIL) on my fedora core
5 LINUX system and began going through he tutorial in loading and
displaying an image.  I tried to specifically bring up a jpg image and
received the following error with the command im.show():

sh: xv: command not found

Any suggestions how to address this error would be greatly appreciated.
Thanks.

Steve

PS. before this step I:

(1) import Image
(2) im = Image.open('cluster.jpg')