Disable Edit With Microsoft Office FrontPage

I've been researching the whole night (and now early morning) on how to disable the Edit With Microsoft Office FrontPage (draw-down of File) feature to no avail even though I know it is possible. To confront the nay-sayers, here's proof-positive evidence: [URL]. On the above site, and virtually all clear channel company radio sites, when you click down on File, you'll see that Edit With Microsoft Office FrontPage is disabled.

I read that you are to type the following in the code, but it has not worked for me:
<meta http-equiv="editable" content="dream-on"/>
Found on [URL]
Again, this does not work for me. Maybe I inserted it wrong? Where is the above <meta line supposed to be inserted in the code view of the web page?

The other incidental issue I have that I'd like to address is this: I found that a web site, naturalhandyman.com, has an extraordinary html encryption protection system: In the DESIGN VIEW, mind you, of his site on FrontPage, not the code view, all of his content is blocked out, replaced with a phrase such as, "[../_private/iipbotter.html]." HOW IS THIS POSSIBLE? I'd like something like this! Do you know what he used? Also is he using a particular type of encryption software because it seems his search rank is not being affected at all?