replacing Kyle's single player model?

[L'Equa Sinar]

How would i go about changing Kyle, and other single player story characters? I have seen a post showing kyle, jan, dessan etc... chnged round, but how do i go about doing it?

Thanks :)

[enDless_Deliriu]

you have to edit the NPC config file I believe. It should be in assets0.pk3