Creating Round buttons in DVD Studio Pro
 

I'm having one heck of a time trying to create a round button for dvd studio pro. My photoshop skills are from my self teaching and I can't seem to create a file with a transparent background that DVD Studio can read, (when I load these into custom shapes, they look good, but when I drop them into the menu, nothing). Does this have to do with a setting within photoshop or DVD studio pro? Am I stuck to square buttons? There has to be a way to create round shapes to be used as buttons, right?

Thanks much,

Greg Hartzell