Do new toolbar Toolbars\Create Folder name must be %appdata%\Microsoft\Internet Explorer\Quick Launch
Yeah, but ever since win95 the width of the "boxes" has been the same on all rows This doesn't have anything to do with my question, but as you can see on the screenshot I've already done what you describe.
If you close some of the bars on the top row, you'll see that they suddenly have magicly resized to the same size as the bottom row. As for your question, there is no answer for that as far as I know. Maybe through some mod, but haven't heard of any mod to do that. They always automaticly get smaller when more and more bars are opened. sorry