@fritzflint
Yup some Dual DVI cards don't work with the new 10.6.3 kext.
You can simply replace them with the ones from 10.6.2 I attached to this post.
Simply boot in windows and replace the 10.6.3 files from system/library/extensions with the old 10.6.2 from the attachement.
Reboot into OSX and it probably works but buggy now.
You will need to rebuild extensions permissions and cache for it to work correctly.
You can do that with options in multibeast or kext utility or osx86tools etc
Good luck.
YES It´s working i cant belive it!
Thank you very much! couldn´t have done it without you Leonoid.
Ill buy you a beer next time you are in Stockholm