"With regard to the graphics, we've shown you the differences that there are between the DirectX 9.0 and DirectX 10 versions of the game and it is ultimately up to you whether you want to buy Windows Vista (if you don't own it already) to play the game with the additional effects which, despite being subtle in some cases, do help to make the game feel more realistic. It's not the best-looking game we've played this year, but it's certainly up there – one thing that's definitely worth a special mention is the game's water, which is without doubt the best we've seen."
Check it out at Bit Tech.