What cable are you using to connect the monitor?
I bought a 226BW recently that came with no software.
When I click the menu on the front screen to adjust the brighntess it just says NOT AVAILABLE.
So, I downloaded Magic Tune Prmeium, which says it is not supported on my system. To add further to the pain, Magic Tune didn't come with an uninstaller so now it starts every time I start Windows.
ANy ideas on what to do?