After some fidling around I managed to have my game in a Wine desktop of 1024X768 and with <Alt><Tab> I managed after a few tries to get my mousepointer outside that deskop. So I could mount my second CD. Great. The only thing is now that my game instead of full screen has a framesize of 1/4 of my screen. Good quality, but (too) small. Changing dpi only expanded the Load CD pop up, not the game itself.
