Then save it to your system folder in Unreal Tournament. Usually C:\unrealtournament\system
Go into your game and open the preferences.
Open the video tab and click change under the video driver.
UT will close and bring up the video configuration.
Select Show all devices and then select OpenGL Support. Click next
and next again on the following screen. Then click Run.
(click to make larger)
Then Follow the steps above to raise the brightness.