Images are one way, sure long to load or change around.
2. Tables, sure again long to change and to visualize
3. Create a word document that they can download and view, but again images and tables and download problems
4. Created a PDF file. Buying Adobe Acrobat writer (500$+) but still have problems with images, tables, download problems, etc.
What it really comes down to is pick a way and just deal with it. I personally think creating an image and then having the viewers surf to it and view as an image is the easiest way to go, that is if you know MS paint or photoshop or some other drawing package. Although to make it look nice create a Word file and then save it as a HTML file and upload it all to your web makes a nice presentation also. That way when you need to change some thing you update word and then save it as html again and re-upload. So it really is up to the person who will maintain the files, how they want to do it. But as long as it stays a HTML viewable file, for the least amount of viewer problems would be great.