MS Plus \ Plus install wizard

When I first installed Windows XP Pro on my wife's system one of the add ons I installed was MS Plus for Windows XP. Recently, not sure when it did work properly but do know she has added other software since, when launched the system reports "You must accept the End User's Lisence Agreement to use Micsoft Plus! for Windows XP." When I attempted to reinstall Plus the System reports "The installation wizard was interupted before Microsoft Plus could be completely installed. Your computer has not been modified at this time. To complete the installation Click Finish to exit the wizard at another time run setup again" When I attempt to uninstall I get the same error. I have disabled everything possible from running in the background still no joy. I tried deleting the folder and all registry entries related to Plus! and on reboot the system doesn't synch with her Pocket PC or Laptop. Personally I don't think too much of Plus! but my wife does.

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