Adding one model's head to another model's body

[BrothForMyPeople]

Hi there

I'm totally newbie in model editing.
I love Blizzard's Assassin Model, looks so gothic, but I always hated that cloak, those shoulder-wings(?), and bugged head, so I cut them all off (see attached file).

My question is how to add a head to this model, a head of, for example, night elf archer?
Is it even possible or am I doing it wrong?

 

[Warseeker]

Geomerging. There are some tutorials here on this site that can explain how to do it. E.g : Geomerging

 

[BrothForMyPeople]

Thanks.
Time to learn some.

 

[BrothForMyPeople]

Hey. Is there option to animate the higher part of geoset (Priestess' of the Moon part) or I've screwed all up? xD
I'm totally noob so please not to laugh at me.

 

[Retera]

If you want to do complex model merging of this sort, I think the best Warcraft model merger currently available is the Matrix Eater:
Matrix Eater 3D Model Editor

After you the Warcraft model in this program, go to "File -> Import" and you can do complex model geoset merging, and include animations on the imported geosets.