It?s been almost three years since the alien Covenant brought their devastating war against humanity to the Xbox in Halo 2. Now, ?because the fate of all mankind is too great to be decided on a console alone,? PC gamers who are Halo fans can finally step into the iridescent green battle armor of the Master Chief and take the fight to the Covenant in Halo 2 for Windows Vista. Was it worth the wait? Let?s find out.