I'm not familiar with Encore but you should be able to create custom menu buttons. You could either use an image with no text as the menu background and make text buttons with CS on a transparent background to overlay over the menu background. The buttons would read "Play Movie", "Scene Selection", etc. Or, you could add the text directly to the background image and use any of the buttons within Encore (or, with CS, create your own custom buttons like the star I used in one of mine) to link to the action desired.
This one has the text directly on the background with a custom button for linking. I'm afraid I can't explain how to link each button to the action you want as every authoring program works a bit differently.
(Sorry I didn't reply to your last mesage sooner)