Have you seen my other ePortfolios? Notice there are different side menus here?
It is really easy to customize side menus. You can move a menu up or down, change the menu title, indent it, and make it into a separator or a sub-header. For example, the menu titled "About Me" on the left was changed from a regular menu to a sub-header using the menu builder.
To learn more, please go to Menu builder.