I upgraded my girlfriend's graphics card to a Radeon 5770 (Vista) and her Civ 5 doesn't pop up the window asking which DirectX version she wants. It doesn't start with the movie, it goes straight to the "Loading" screen and runs OK. I'm assuming it's running Dx9 but she should be able to run 10. I'm just curious as to why it doesn't ask her like it asks me.
