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SmartSuite which Lotus Approach is application in this suite. Is not officially supported by IBM on the Windows Vista operating system, but it does work on the 32-bit version of Vista if the installer and applications are run in XP compatibility mode . IBM has no plans to release specific Vista or Windows 7-compatible versions of SmartSuite or Organizer.
As for Windows 7 as stated above it isn't compatible but the professional and ultimate versions of windows 7 have xp mode and Lotus approach could also be run in these modes.
Let me know if this helps.