To add text to a menu:
Make sure the menu to which you want to add text is showing in the iDVD window.
Choose Project > Add Text.
The phrase “Click to edit” appears on the menu.
Click the text once to highlight it, and then type the new text.
An in-place control (shown below) appears below the text. It has controls for changing the typeface, font style, and font size of the text. You can make changes if you want, or click on the menu outside the text to make the in-place editor disappear.
With the text still selected, drag the text to the place you want it on the menu.