I want to know the answer to the following question:
If located in Canada somewhere where DST is observed, a system running Vista might mishandle time stamps that are older than what year?
All the background I'm provided with is that "Older Microsoft Windows systems usually store only a single start and end rule for each zone, so that the same Canadian setting reliably supports only post-2006 time stamps.". Is that enough to answer the question?
Answer: no