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Im used following OS:
Windows 7 Home Premium 64 Bit SP 1
Windows XP Home Edition 32 Bit SP 3

All the same, the stupid Use-Button has no function. In order from the Manual fall i back to the Game-Screen. But not happens and the Object don´t appear on the screen.

Help me please or this stupid game is worthless!
The "Use" function works in a bit unusual way. On the game screen click the object on which you want to use something, and then go to the inventory, select an item and click Use.
Thank you. Problem solved.
No problem :)
Enjoy the game.