Problem with launching the game.

I happened to find a disc with Heroes 5 (a pirated copy), installed it on Mandriva 2007, and it ran normally under Wine. I played for a while and, being an honest player, I went and bought a licensed disc of the same game, Gold Edition. I uninstalled the pirated copy, installed the licensed version, but the licensed version doesn't seem to recognize the licensed disc; it says "insert...". Is there a way to fix this? P.S.: The pirated copy also required a disc, but when I inserted it, it was satisfied.