The Steam release of DiRT downloads and installs fine via the Steam
GUI, however fails to start due to some error that's proving elusive
to track down. Most all of the config files for this title are in XML,
and the ../../$gamedir/hardwaresettings/hardware_settings_config.xml
created/appended to at launch time maybe the place to start looking
for answers -- will recheck when CXG-9.0 comes out...
Cheers!