Sometimes I use FrontPage or VisualPage to edit a page, and save the results to a tmp file. Then I copy the resulting new code back into the original page using Arachnophilia. You know it. You'll need Netscape Navigator 2, Netscape Navigator 4, and IE 3 at the bare minimum to test your html. A lot of people out there are running old versions of IE or Netscape.
Graphics are problematic.
If you're trying to import existing stuff, good luck. My images were mostly made years ago on the Mac in MacDraw. You wouldn't believe what I had to do to get them into GIF format. Briefly, I bought 5 graphics packages, got two sharewares, and a new CD ROM drive. It's a lie.