Forum Moderators: travelin cat
afaik there's no such thing built in IE.
I can imagine, you allready know this, but there are some good standalone wysiwyg editors for the mac - Golive [adobe.com] and DreamWeaver [macromedia.com] are two of the best known. At least in Golive you can predefine different Browsers to check and browse the pages you work on.
There are some java based in-browser wysiwig editors. Look for HTMLJive.
Finally, you could always try the javascript/bbcode approach, as can be seen on many bulletin boards. These have buttons allowing users to click a button to insert the correct html tags in the text box.