This is for the 1.02 update, and fixes the game so it does not require any initial logins or verifications. Also if you have issues with low performance, as in the vidios don't work properly, or the menu screen crawls, or the fps in-game drops alot, then you might want to try using this.
Note: This does stop all online actions, including multiplayer.
1. Install the game.
2. Run the game and let it update. Or download the update and install it manually:
Mirror 1: http://www.megaupload.com/?d=9853UJN2
Mirror 2: http://www.4shared.com/file/fd8yN-dH/ac_brotherhood_102_updateexe.html2
3. Download this zip:
Mirror 1: http://www.megaupload.com/?d=6X5EA812
Mirror 2: http://www.4shared.com/file/weRWU55s/ac_brotherhood_102_SKIDROW.html
4. Go to the game's install folder (usually C:\Program Files\Ubisoft\Assassin's Creed Brotherhood) and copy the files from the zip in there, over-writing the ones installed.
Play the game.