You gotta be kidding me. 98?Front Page 98’s
Frontpage uses frontpage extentions to run these functions. You need a web hosts that supports frontpage extentions. It won't work on your local system.
Allots happened in the last 8 years. I think you'll find there's a better way. A much better way, to do this feature now. Have a look at for example http://www.cssplay.co.uk/menus/index.html and many other sites similar to this.
Frontpage 98 is just a little bit old. Get an upto date wysiwyg editor for making web pages at www.nvu.com It's free and beats the pants off of frontpage.