Heyho, here are the first steps for the tutorial:
Step 1Grab some Terminator legs and remove all details that identify it as a Terminator :)
Step 2Glue a normal SM torso upon it. Before that remove all bits that enlarge the torso unneccessarily (sp?), such as cables, eagles, belt parts, etc.
Step 3Choose a head that you like and glue it onto the body:

That's all for today, because I don't have any GS at hand :P Sorry, I will buy some on Monday hopefully.
BCB