How do you change World Heavyweight Champion belt to NWO.?

I have WWE Smackdown vs Raw 2007 for PS2. I unlocked the World Heavyweight Champion belt and bought the NWO belt. How do you change the World Heavyweight Champion belt to NWO.How do you change World Heavyweight Champion belt to NWO.?have a title match and let the title change hands, then select nwo.How do you change World Heavyweight Champion belt to NWO.?do wat the guy above me said