From attached README.txt:

What's it?
-It's a simple Windows tool to update a WAD channel with a new DOL homebrew. It's based on injectuwad.exe.
Note: it works ONLY with homebrew WAD channels, not for Nintendo's original WAD Channels (WiiWare, VC, ecc...).

Features:
-Possibility to change the internal DOL of homebrew WAD Channels.
-Possibility to change the WAD Channel name shown in Wii's System Menu when you move the WiiMote cursor on it.
-No other files required (program is an ALL IN ONE)!
-No shell will be opened during the injecting process!
-A visual progress bar will give you info about the injuectu process state!

Thanks:
To injectuwad.exe creator.
To all.

È un semplicissimo programma per Windows che ci permette di aggiornare il nostro WAD (canale) inserendo un qualsiasi DOL al suo interno.

v1.0