Please note that official support for this menu version has now ceased. There are still plenty of users, though, and the forum is still running. Some of our long-time users may be able to help you out.
I have 7 drop-down menus at the top of my page, and I need the overall menu width to span 100% across the page. I set the following and it didn't do any good.
Never mind. I changed the style of the site a little so I wouldn't need to stretch. I'm thinking there is no way to stretch these menus and that's why no one responded.
I know you said you changed things around so you didnt need to do this, but a trick I used to fake it was to use graphics. Have the header of your menu (or the main horizontal menu) have no borders whatsoever, just separators inbetween the menu items. Then create a banner for your site that has a horizontal bar thats about the height of your menu stretching the entire width of the page. I generally use a 600px main graphic, a 1 pixel width stretching graphic and then a 100px end graphic as my banner. That way the page can stretch and still look ok. Then set your menus background color to the same of the banner graphic's horizontal bar. The menu will appear to stretch completely across the screen, when in fact its just your banner and the menu stops half way.
Give it a try if you'd like. Its not that difficult to do.
Dave Hergert
Software Engineer
"Helping to make the menu better, one at a time."