Instructions For Downloading The 2.01 Patch For RotWK
Select the appropriate language for the patch. Download it and save it at:
C:\Program Files\Electronic Arts\The Lord of the Rings, The Rise of the Witch-king\patches (you may have to create the "patches" folder).
Once you have done that, go the the start-up menu (i.e. the menu that appears when you first insert the game) and click on the "Check for Update" option. When it asks if you wish to download the patch, click yes. If the file is in the above folder, it should install it without going through the download process.