laptop display

[Mark Grieveson <dg135@torfree.net>]

Hello.  I just installed Debian Etch on an old laptop (IBM Thinkpad 
770).  It works okay, but the image is half the screen size.  It's a 
centred box within the larger screen.  How do I make it full size?  I 
tried "dpkg-reconfigure xserver-xorg", thinking that changing the 
resolution might help, but, it did not help. 
I suspect it's something to do with the laptop.  This is the first 
laptop I've ever had.  All suggestions are appreciated.

Mark