I have Vista. I've downloaded them from everywhere and saved them in various locations.
Link to the source
http://aktualniyaktiv.forum24.ru/?1-10-0-00000077-000-0-0-1225968059
And here's the link to the archive itself (heroes2.rar, 24.56MB)... which is where the source directs you.
http://www.gamed.info/files/strategy/heroes2.rar