crack beyond divinity

[juhcon]

Hi folks!
I entered a wrong key and got another one now, but it's impossible to re-enter a key once you've changed it, even if you reinstall the game ?! . What do I have to do to make this stingy game forget that I've already entered it. I should have the possibility anyway if I made a mistake while entering a key... so plz help.

second question: is it enough just to delete the drive devices from the hardware manager instead of unplugging ? Can't get this thing work, but thx afterall