Since most PHP programmers have been using HTML even longer than PHP, many will see HTML questions as pretty basic. Since there isn't an HTML forum on this board, I suggest that you post your HTML questions in the Newbie forum for now.
To the board admins: I think an HTML forum is a good idea. HTML and PHP go hand in hand, of course, and new PHP programmers may sometimes need help with HTML. I would suggest putting it in the Misc Help section, above the Windows help forum. Whattya say?