Hello Volker

All you have to do is make sure that you have unzipped Arena & CB- Emu into the same directory C:

Now open the Arena directory in CB-Emu

Now open the Arena2&3 directory and unzip the
ArenaENG.cfg and mess.cmd files into Arena 3.3.1 directory.

Now you will be able to play against all the chess computers.

Don't forget that you can now play against the chess computers with either a Novag Citrine or a Berger SolusChess board.

Hope this helps.

Regards
Bryan