Its just a spawner (not the actual model file and texture), so you need hl2ep1 to be installed on hard disk. Sorry, but its without the headcrab, if someone has an idea to do it, i would be so glad. :)
You can spawn the zombine from "Characters".
-- Installation --
-Sorry, but its without the headcrab, if someone has an idea to do it, i would be so glad. :)
Check the gmod10 spawncode?
The model doesn't seems to include the headcrab model or its a part of the zombine's animation maybe if you can make a script or try *ep2's zombine model?
*that is if you have ep2