Gta Iv Request Code GTA IV PC Serial Code Lost?

GTA IV PC Serial Code Lost? - gta iv request code

I have GTA IV for PC and I threw the box wrong and when I run now GTA IV, after the installation, he says he needs the serial number. I ask to know the unlock code, but no one, how can this hack, or skip this step or atleast get the new serial number? Please help and thank you for those who do not!