Monitor Resolution issues

[Linux User <linux.user.au@gmail.com>]

Hello all,

I have a BenQ 20" G2220HD series monitor, and I was wondering if
anyone knows what I can put in the Xorg.conf file. I've just switched
from Debian to Kubuntu briefly for reasons that would take time to
explain. Debian Lenny 5.0.4 sets a very high resolution and makes
everything far too small, while Kubuntu gives me 800x600.

I also wonder what I can do in the configuration file about my
graphics card if I need to do that. It's a Gigabyte GT220 (nvidia).

Thanks for any help. I'd like to know how I can do things manually
because the tools on both distributions won't let me change the
monitor resolution or anything like that.

Kind Regards.