This isn't an area I claim to know a great deal about but, as I see it, you're trying to do the impossible.
e-mail clients, such as Outlook, can handle basic HTML (so that they can display different fonts and pictures embeddded in emails) but I don't think that they can handle the complex HTML used by web pages designed in Word.
There's a very simple way to find out if my theory is correct: Right-click on the HTML file and select 'open with'. Choose to open the file with Outlook. If I'm right, you'll get a message saying that Outlook can't open the file. (If Outlook can't open it on your computer, it won't be able to open it on any of the computers that you send it to). If I'm wrong and it opens correctly, you should now be able to send it to your own e-mail address, as a test post.
However, I'm fairly certain that Outlook won't be able to display the page and you'll be forced to send it as an attachment.
Sorry!
Chris
PS: If, like most people, you receive spam, ask yourself if you've ever received a spammed HTML page. I certainly never have; in every case the spammers have sent a link to a page, rather than the page itself. This seems to back up my view that it's not possible to e-mail a full HTMLpage. (If it was, I'm sure that the spammers would do it!)