Which version are you using? Cooking or Stable?

Cooking comes with a package called lxrandr that allows you to alter the resolution instantly - so long as it's supported. I converted it over for Stable too @ http://www.trixarian.za.net/downloads/lxrandr.tazpkg - you can just download it and install it with tazpkg install lxrandr.tazpkg - note you may also need to install a package called xorg-xrandr to make it work properly.

The trouble is getting the full range of support, which means getting the right graphic card drivers and modules loaded - make sure you're online before trying. You can do it like this:
1. Start a terminal (xterm) and su to root
2. Type tazx and select the first option in the list, wait for it to download the package list and pick the card make nearest to yours. Allow it to install everything and reconfigure everything. Then close the program.
3. Still in terminal, type tazhw detect-pci and allow it detect everything.

That's it, everything should be configured properly. With lxrandr installed there should be a new option called "Monitor Settings" under your "Start"-->Preferences menu. Just click it and set the resolution to whatever.

Thankx Dude!

i will try it as soon as i am home from work and post the result!

I will be damned!!!!