1. Unzip herzberg.zip
2. There are three files: DM-UssHerzberg.unr, Herzberg.utx, and Herzsounds.uax
3. These files must be put in the proper folders, In the Unreal Tournament Directory. As follows:
DM-ussHerzberg - "Maps" folder
Herzberg.utx - "Textures" folder
herzsounds.uax - "Sounds" folder

Then to play, double click DM-ussherzberg. The game will load (It is slow.) When you are in the game, you can move around as normal. Right now there are so troubles with appearing in a black box or with other players... I hope to fix that within a few days.