There are separate forums for Divine Divinity and Beyond Divinity.
In DD there is a problem with some Radeon cards/drivers and the configuration program in Direct3D, but if you skip the test (check the 'skip test' box, then hit 'test' and 'apply & close') the game itself works fine.
Check the DivX Player, and see if there is an option you can unselect about the program associating itself with .div files. This appears to be a problem in BD (though the game should not be using Windows' file associations, and the DivX player should not be accessing .div files without being told to do so).
