This is just an awesome patch... I had a look at the DVD version of WC4 some years back, when a friend of mine got it together with his DXR3 card... then, about a year ago I found it on eBay, and didn't hesitate to buy it. Unfortunately I didn't work with the DXR3 card that I had (at least not under WinXP). So it just stayed on the shelf for the time being (I just watched the movies several times with PowerDVD and on our home cinema system). But now you've finally enabled my to play this version of the game... AWESOME!
Though, I have a few problems. Video works fine, no stuttering, no skipping and perfect quality, but I found to have some sound issues. While the game works fine at the beginning, the surround sound starts to behaves strangely when I talk to Eisen for the first time. I can hear the center sound (the voices and stuff) only at VERY low volume, while all the other channels (the rear channels for the atmo-sound, and the left and right channels for the foley) are played at normal volume. From this point on all the videos show this strange behaviour... if I play the clips with media player the sound is correct. And yes, restarting the game helps... though I don't want to save and restart all the time.
The second thing is when it comes to choices in movies... when I start the game I can't pick a reaction in movies. Although I can fix this by returning to the desktop (via a task-switch or the windows-key), and then returning to the game.