AI tactical display keypad query

I am using AI tactical display view, which places a plugin menu on the main FS2002 Bar. The program works fine, but I carnt get it to zoom in or out. All the other menu items work fine. It says to zoom in/out use keypad + and - to change. I use a notebook, and it doesnt have a keypad. My + and - keys do not operate the zoom function. Does anyone know what the alternative keystrokes are for a notebook keyboard? Cheers ChrisPS, on the list of aircraft in the left hand bottom column, what are the letters and numbers like FFFFFFFEF5 mean? I notice that some aircraft have a blue dotted line going up to the top of the frame, that dissapears after a while. Cheers Chris