Enlanging the Screen of a PDA?

2Stupid2KnowIt asks: "Given the article on the Braille PDA I would like to find an application for the Palm which will allow me to magnify the entire screen. I found TealManify and it almost does what I need, but it disables the input to the screen. I would like the application to use only the scroll wheel on the Sony Clie for moving the magnified area. Pressing the scroll wheel switches between vertical and horizontal scrolling."