hello,
i have an HD 6850 using hdmi cable connected to lg 3d tv (or 3d monitor) make sure the hdmi cable is 3d capable 1.4a i think, then purchase TriDef 3d software for ati hardware its half price download the checker here's link
http://www.tridef.com/cart/pages.php?pageid=5
you can download a trial version for 2 weeks to try it out although i can tell here and now it works brill even on my HD6850, works on all my games.
make sure you have your desktop set to the same res you play games in or 3d will not work and will say 3d error its disabled, in other words you have to have your destop set to the same res as the game you are going to play befor you start the game. well worth the money and idiot proof to use.