What size is the screen? and whats its resolution? you may need to load the 800 screen if thats what your resolution is (800 x 600 ).
Not sure how you will get on if it is a small screen as I think hitting the right buttons will be a pain. I have a 17inch touch screen (1024 x 768 resolution) and I made up my own screen with bigger buttons, made using the touch screen much better.
Hood