I just replaced my nvidea 5700gt card with an ATI Sapphire hd 2600 Pro card.Now its holidays and game won't run and store is closed.10 days no TRAINZ!!!!!!Withdrawal symptoms have begun.All I get when I start the game is VPU Recover has reset your graphics accelerator as it was no longer responding to graphics driver commands.I have been unable to remedy this.Lots of ideas on net but no definite answer.Does anyone have any ideas what this is all about?I gotta gut feeling I should have stuck with Nvidia.