is there a way i can blend the 2 ? say i make a head of wolf and body of girl and i want the face of girl to change itself to shape of wolf...how can do tht?

You could make a morph but the number of vertices (vertexes) would need to be the same for both objects.

cheers,
dr geep
;=]

or you could 'frankenstein' the two. There's several ways to do it (of which I only know by reputation...;) the 'brute force' method is to pull in the 'head' object, then make the body invisible, and then bring in the 'body' object and make the head invisible, then interpose them.

Of course, if it's something you want to make purpose, I suppose you could open them in a modeling program (like Wings 3d, for example), delete the parts you don't want out of each, then group them together. Now - I cannot stress this enough - save the result with another name!

You'll probably have problems with textures, etc., so stay tuned for easier and better methods.

cant we create an inj file or something so tht i can inject the shape of wolf face into the girl's face?

Injection file will only work if the morphed mesh is exactly the same as your source.  You would need to either spin dials on your character to attain the desired result or import the head into a modelling program for modification.

There are morph packs already out there that will do this for some figures. 

Sixus1 has a bunch of Lycanthropy sets for various figures
http://www.sixus1.com/catalog/poser-characters-c-21_27.html

Also there is a set of creature morphs for DAZ 's Victoria 4. 
http://www.daz3d.com/i/3d-models/-/victoria-4-2?item=5280&spmeta=rq&_m=d
While it does not have a wolf morph it does have a dog morph and a bunch of others that you could try using to make something you like.