With that theme there will always be 5 icons on the bottom. If you don't like that try a different theme. There will be an icon for each application on the phone (calendar, brickbreaker game, BB messenger, all of the ones that come with it). The only way to delete an icon is the delete the entire program. You can do that in Options/applications. But to not have the 5 icons on the home screen you have to try a different theme (Options/themes). To move the icons hit menu from homescreen and all the icons are there. Highlight one (don't open it with the trackball), menu, move icon, and move it where you want it. The first 5 are on the bottom of the homescreen in the today theme I think.