Ability to use programs with lower resolutions

[Jacob Beauregard <jake13jake comcast net>]

Anyways, I was trying GNOME out the other day. The monitor has a resolution of 
800x600 (it's set at this resolution so my mom can have an easier time 
reading the screen). There were top and bottom panels. I opened Evolution to 
find that the buttons at the bottom of the wizard were not visible (they did 
not fit on the visible screen space). Certainly wouldn't have even had a 
chance to be visible at any smaller resolution.

I did file a bug report: http://bugzilla.gnome.org/show_bug.cgi?id=440049

I'm still a bit afraid at the inability to resize some windows, as I believe 
there may be some more cases like this throughout GNOME.

This is why I ask: are there any developer guidelines for the dimension 
thresholds of a window that isn't resizable?