highlight one element of my menu

Hi, I would like to highlight one element of my main menu, the "support us" element. Specifically I would like it to look like the "support us" button on the about page except that it should be the same font size etc as the rest of the menu. I'm not sure if it should be Uppercase or not, but if you show me how to make make that change I can always change it back myself. Thanks a lot TB