Stack window/screen sizes

[Peter Haworth]

I just installed my app on a computer other than the one it was  
developed on and breathed a sigh of relief when everything still  
worked... EXCEPT that the stack window sizes do not quite fit  
vertically on the new computer.

I think this is because the screen resolution on the developing  
computer is 1680x1050 and on the computer I installed it on, it's  
1280x800 (and there is no 1680x1050 res available). How do I deal with  
this? Is this what the Geometry manager is for and if so, is there  
good tutorial out there for it?

Thanks,

Pete Haworth