Sorry, but I can't explain it any more simply. There's a minimum skill level you need to attain to do these things.
Expression Web is the follow-on to FrontPage, and though I have never used it, everyone calls it WYSIWYG. Maybe check a few more sources. I'm also not familiar with Sharepoint, and can't tell you how an SP site differs from a plain HTML site, or if it can pick up an FP project. I would certainly expect Microsoft to offer upgrade paths (ability to import FP projects) to either EW or SD. It's possible that some other WYSIWYG designers/editors can also import FP.
Without knowing what kind of functionality and complexity your current FP site has, it's hard to recommend anything in particular. If it's just simple plain static HTML, it should be trivial to replicate it on another system. If it has JS or CSS, that will require some skill to transfer or re-create. If it's already using database functions, that could be quite complex.