I just bought a Samsung Gravity Touch (T669) and I'd like to modify the screen that comes up when you press the Menu button. The manual says it should have an icon with a plus sign on it which allows me to add more icons to it and an icon with a minus sign to delete some of the icons I don't want when you tap that little modify icon in the top right.

I can tap the modify icon and it puts outlines around the icons that are there but the "minus sign" icon doesn't appear. A blank icon does appear at the end of the list but I can't seem to make it do anything.

Can anyone tell me what I'm doing wrong?

Thx!