Point me to a site where I can download, or buy, a simple Word Perfect
viewer program.  I need a viewer program I can load on a CD which
already contains an ebook, done in Word Perfect.  I want a user to be
able to view this ebook even if they do not have Word Perfect in their
computer.

Wordviewer from microsoft can view WP files

http://download.microsoft.com/download/word2000/viewer/1/win98/EN-US/Wd97vw32.exe

Quickview can view wordperfect files 

http://download.com.com/3000-2075-10258413.html?tag=lst-0-17

Corel (The company that created wordperfect) stopped offering a viewer
application. Another option to the comment below would be to purchase
a copy of Adobe Acrobat 6.0 Standard edition. You can create pdf files
with this software which are much more standard today. Then you can
bundle the pdf file with a free adobe acrobat viewer on a CD to
whomever you'd like.

Hope this helps!