I'd start with uninstalling it, reinstall McAfee and see if everything is fine again. Then start thinking if you really want this suite or prefer to return it (you've got a good reason to do so). The review in http://www.pcmag.com/article2/0,1895,2020899,00.asp isn't too positive moreover.
If you want to keep it, better go to the Virus and Security forum and ask for advise on removing McAfee, and if they know of issues between CA Suite 2007 and Windows 98.
If you still can't get it working, there are many alternatives.
Hope this helps.
Kees

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