as far as I got it, he has only the german verion of the game available - I have managed to get the full english game to work and I didn't experience crashes so far (everything runs quite fine), no bugs or similar problems encountered. (I added some DirectX files to the Windows folder and it seems to have improved stability)
I will upload the game to MF or MU as soon as possible (with Heepsters permission of course)
Of course you can add your own version...
But I would appreciate it if you add an small changelog ;D
And yes you're right, my copy of the game is a german one