What is the guidance for developers to implement the fix for historical data with OS prior to Vista?

Q: What is the guidance for developers to implement the fix for historical data with OS prior to Vista?
A: From a developer perspective here: msdn2.microsoft.com/en-us/library/ms724253.aspx. More info: There’s information about exactly what the time zone properties are and how to read them at blogs.msdn.com/stephen_griffin/archive/2006/12/06/outlook-2007-timezone-structures.aspx.