thanks again Cowsheep! that cdcheck is gone for good
unfortunately the managcal.exe, the exe that starts automatically after calcio7.exe, gives a message (it is not a windows popup this time)(translation): "you cannot start the game. you need the original pccalcio 7 cdrom" and a button [OK] if you push it, it sends you out of the game. I included managcal file for eventual inspections.