can't get widescreen resolution with ati mobility radeon 9200

Try to use displayconfig-gtk: Simple gtk tool to change xserver settings like graphics card driver or monitor.

-- Please open a Terminal from the menu Applications->Accessories->Terminal and type or better copy and paste:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo apt-get install displayconfig-gtk

-- give your user password when requested, you don't see nothing when you type it, then press enter.

Then to configure your monitor resolution:

sudo displayconfig-gtk

then try to select and configure your monitor from the list or try to define your monitor by putting the inf file take from xp driver cd or floppy or from the net. If you are introuble due low resolution to push hidden botton out of the screen visual try to press
the ALT key on keyboard and drag the working windows to get access to buttons.

Reboot your pc.

Then go to menu System->Preferences->Screen resolution to try to get high screen resolution setup

If this solves you problem, please mark as Solved. If not, please clarify your question.

hope this helps