No. Snap Schedule is designed to run under the Microsoft Windows Operating systems (XP Service Pack 2, Vista, Server 2003 and later) and therefore cannot be installed on a Palm Pilot as the Microsoft and Palm operating systems are incompatible.
Snap Schedule does provide the mechanism to export schedules and reports to portable formats like PDF. The resultant PDF documents can be viewed on a Palm Pilot equipped with the appropriate Acrobat Reader. You would not be able to make changes to the schedule but would have the scheduling information handy.