I have two items on the main menu and want to move the sub-menu to the main menu

Hi In my main menu I have two main elements, about and products. I am happy with the About page but would like to take shopping cart and order status out of the drop down menu and have them as separate elements in the menu bar. I would also like to add checkout to the menu.

Just a point, I know how to add these to the menu bar but not how to get them working.

I am using twenty ten theme

Thanks for your input