Hi Tim, I have an idea that I found in Fractal eXtreme. They use a guessing routine (not as efficient as yours by the way) but what I do like about it is that it starts at the centre, where the most interesting places are and moves outward. This would be a wonderful option for ManpWIN when one is deep zooming. Would you be interested in giving this a go? Another thing I would like ManpWIN to do is to utilise multiple processors. It only grabs one processor on my quad core machine. Fractal eXtreme uses all 4 cores. I'm not a particularly good programmer (just look at my code LOL) and don't really know these esoteric things. I'm a plodder. I just keep at it until I am happy. Any ideas greatly appreciated. Thanks, Paul. ---------------------------------------------------------- Paul de Leeuw Computers NSW Central Coast, Australia Email: <mailto:pdeleeuw@deleeuw.com.au> pdeleeuw@deleeuw.com.au www: < <http://www.deleeuw.com.au/> http://www.deleeuw.com.au> ABN 72 360 822 562 ----------------------------------------------------------