Hi pcwebdesign,
Just curious why you would want to run it on Win 98?
Is it because you want to run it on your desktop?
Are you planning to put live on the net for all to see ? If yes, may I suggest you install Apache, php, MySQL on your pc. Alot of CMS run on this system. Then you can install the CMS in a live environment and then copy files from your local files to the server.
You can pick up an easy to install package here
www.firepages.com.au - Look for phpdev423
This site is great for testing some CMS for free and reading reviews
--> Have a look here
http://www.opensourcecms.com