[Sheap]

To install the mod:
Open the mod zip file. It will contain a single file called hhnerf.dm. Move this file into the mods/ directory under your (patched) dominions3 folder. To use the mod, go to the "preferences" screen, choose "mod" preferences and enable it. You need to enable the mod before you create your pretender for this game. You should disable it again afterward - the game will automatically choose the correct mod for each turn once the game is going. You should do this before you install the patch, if you are planning to keep your previous game version.

To install the patch and keep your old version:
Make a copy of your dominions3 folder. When you go to install the patch, it will choose one of the copies to patch. Whichever one it chooses is the patched version, whichever one it doesn't choose is the unpatched version. You'll only have a shortcut to one, but you can run the other by going to its folder and double clicking the dom3 program. Which version you are currently running will be displayed in the lower left corner of the screen when you launch the game.

It is not 100% necessary to keep both versions. If you play in an unpatched game with a patched version of the software, your battle replays will not exactly match the actual battle results although usually they will be pretty close. But, everything else will be ok.

Hopefully the 3.02 patch will come out soon and the need to have multiple game versions will go away.