Change Width of Each Asp Menu Item

Question

I would like to do something similar to the code in the link below (but other solutions are gratefully accepted), but instead of changing the background color for menu items, I would like to change the width. Specifically, I would like the first menuitem to have a width of 30 px and all other menuitems a width of 200 px.

http://stackoverflow.com/questions/705440/asp-net-menuitem-individual-styles

Diagram: www.latinolandscape.com/temp/menu.jpg

Thanks.