Thanks....everything is OK now!

As you advised, I installed Panzer Corps first - then Afrika Korps.
I didn't update yet, since I wanted to see if Afrika Korps was integrated.
Well, starting the program, the program title showed: PLAY Panzer Corps: Afika Korps - which puzzled me.
The main menu following looked like the standard ...

I have Panzer Corps installed.
I bought Afrika Korp then and also wanted to install it.
But both programs want to install in the same folders.
If I do that - Afrika Korps doesn't show and un-installing one program un-installs them both! :?

So - How do you install both programs correctly and when ...