Wargus is a Warcraft2 Mod that allows you to play Warcraft2 with the Stratagus engine, as opposed to play it with the original Warcraft2 one. So unless you have a legal copy of Warcraft2 (original DOS Version required, won't work with the battle.net edition) Wargus will be pretty useless to you, since it doesn't come with any graphics or sounds itself.