Have MS's optical sensor, (Intellieye)Explorer trackball. During a Mahjong games I slewed sideways, Ever since,the 3d presentation puts the game on edge. Can't flatten it out. Until then, all was well. All other operations for the last 6 months have been fine. Fine print on trackball box mentions other Windows programs, but not ME. This part of the problem? Have uninstalled/reinstalled the game. Loaded an updated program from MS's mouse page. Help.