importing face shape 3d scan to facegen

[overondid]

Hi everyone
Been working on creating lookalike models using facegen.
Im trying to create a face shape by using the 3d scan option in facegen but Im confused as to how to create that kind of file
for reference facegen says:

The scan must be in the neutral expression
It must be in Wavefront .OBJ format
No UVs or color maps required; shape only
For color, use the Photo tab BEFORE this step

Any help in the right direction would be much appreciated
Cheers!