Graphics issues in all installments (Vista).

I downloaded the latest DirectX, updated my video card drivers, and installed the patches, but nothing helps.

Try changing the resolution and disabling anti-aliasing in the settings. There's also an option called "simplified image" – try checking that box. You can also try running the game in compatibility mode for Windows XP – to do this, you need to set the compatibility in the game's shortcut properties. If that doesn't help, we'll think of something else.