Aterm and Refresh problems

[Socheat Sou]

Hi,
 
I have Cygwin 1.3.3 on Windows 2000 with the 
XFree86 4.1.0 with Blackbox.  I was able to compile aterm from source 
without any problems.  However, when I run aterm, it seems as if it doesn't 
automatically refresh the window.  That is, when I type in the aterm 
window, I can't see what I'm typing until I force it to redraw the window 
(usually by moving the window).  Is it aterm that's the problem, or is it 
Blackbox, or is there some configuration setting I need to know?
 
On a side note, where/what is the config file for 
rxvt?  Thanks,
 
Socheat