As there is sometimes the question how to patch d2 to an older patch (1.11, 1.10 or 1.09) here is the answer:
1. Download the Revert to 1.09 System
2. The only required file is the game.exe, if you want to patch to 1.10 or 1.11. Copy it into you d2 folder. If you want 1.09 you also need all the other files in the 1.09 backup folder of course
3. Install the patch you need
1.10
1.11b
HAVE FUN!!