As a programmer I can tell you that the coordinates of certain objects in any program are stored in Registry or Ini files or XML files etc. When Windows determines these coordinates it cannot compensate for the dual monitor display. ie. If I program something to start at Screen centre... which screen does windows choose... That's right, the primary one. The left edge of your primary screen is treated as position 0 therefore all the coordinates for your secondary screen are minus figues. To wrap up, it's all screwed up and there isn't a lot you can do about it... and believe me, I've tried.