You have to download the NoCD patch from here:
http://m0001.gamecopyworld.com/games/pc_wall-e.shtml
And also the Reloaded or Vitality crack from the same place, then replace the original EXE with either the reloaded or vitality crack and use the nocd patcher to crack the CD Check. Next, copy over the video and music folders form the DVD to where your game is installed and you should be OK!