HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

I don't understand how to launch the HD version from the Warlords of the West launcher. The setup seems to be working correctly; it creates h3wt.exe_HD.exe, but when I run it, the Warlords of the West launcher opens, and clicking the "Start Game" button launches the regular Warlords of the West without the HD version. I've tried versions 2.57 and 2.55, and the result is the same.