How do I UNactivate a code?

[Jaradcel]

I tried installing the game on my dad's computer as he loved the first King's Bounty. Unfortunately, we found out that we can't run the game at all (because of the 2.0 shader issue)

How do I go about getting back that activation count? I'm down to 2 and while that may seem like plenty, if I install it on my computer and then the new computer my dad intends to get (Yeah, he's *that* crazy about playing it) I'd appreciate knowing I have a way to unactivate if needs be.