unSafedisc only works on 95/98/ME, not on NT/2k/XP.
to unwrap a SD1 protected game, you can also use Safedisc Annihilator by ArthaXerXes.
http://utenti.lycos.it/ario309ixeb/safedisc.htm
i think this works on NT/2k/XP, but i'm not sure.
since this is a SD2 protected game, you have to use Safedisc Analyser to get the SD version. then use the appropriate unwrapper.