ice-boy: facegen generates faces from a base mesh. you can also import the v4 head with a LOT of work with facegen customizer.
if you are interested you can find the tutorial here:
http://www.facegen.com/Tyler/CustomizerTutorial.htm

i tried it, the head was there but not the textures so i made a mistake while adjusting the base mesh onto v4's head. very tricky thing... the software also needs a few hours (even on a quad core with 8gig ram) to import v4's head...