IFreeBusyData::SetFBRange [Outlook 2003 API Reference]
Sets the range of time for an enumeration of free/busy block of data for a user.
HRESULT SetFBRange( LONG rtmStart, LONG rtmEnd );
[in] A relative time value for the start of free/busy information. This value is the number of minutes since January 1, 1601.
[in] A relative time value for the end of free/busy information. This value is the number of minutes since January 1, 1601.
Used to indicate the time range of calendar items for which to retrieve details. The values of ftmStart and ftmEnd are cached and returned in a subsequent call of IFreeBusyData::GetFBPublishRange.