Hi Charles,
I took the liberty of looking over some of the HTML on your site. I write web sites and pages by hand, so I though I would offer you a few suggestions based on my meager experience.
You are using layers () in your pages. Unfortunately, these use fixed locations, and different fonts will cause the problems you are seeing on certain browsers. As the fonts scale up and down, taking varying amounts of real-estate on the screen, the Layers stay stationary, fixed at a certain percentage or pixels from the top and left side.
If you plan on doing this frequently, you might consider buying Macromedia Dreamweaver. I would avoid Front Page like the plague, although it is better than it used to be. From the looks of the code you are creating with SiteBuilder, I would lose it as well.
This is what I see on a box stock Windows install:
Use fonts that are present as native or substitutes on Macs, PCs, Windoze and Unix systems. The fonts you are using are going to give you fits! Fonts are often sold for print use, bundled with desktop publishing and word processing programs, and are generally copyrighted, so the fonts you have may not be on another's system.
Not trying to be a smart-ass, only to help.
FWIW,
Greg G.