Where can I download a clean version of Heroes 3?

What is this mod? By the way, I found The Restoration of Erathia, it seems good.
But I'm still looking for the links.

Added 2 minutes ago
Thanks! I'll try it out now.

Added 2 minutes ago
And is it better to install Warlords of the East on The Shadow of Death?

Added 8 minutes ago
I also found this: http://www.rutor.org/torrent/51408 Is this it?

Added 20 minutes ago
Heroes Chronicles: Uprising and Heroes Chronicles: Frozen Blade
Oh, what is this?