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As Stiki noted... since we are spending time discussing this, you should also, on your part, not be lazy: install and at least once launch the game in test mode, so that you know what is being discussed.
WT is perfect for this; the patch takes 20Мб, installs on SoD with a single button—during installation it finds/asks where SoD is, copies the necessary files to a new folder and patches them. It creates a separate registry branch, meaning it does not intersect at all with current versions of Heroes.
It also uninstalls very well; there is an Uninstall shortcut that leaves no trace behind.
http://www.heroeswt.net/download.php