Biohazard 4-D Executer UBCS Models

Hello,I’ve recently seen Biohazard 4-D Executer and the UBCS models were amazing.I’m going to make them.They are going to be based on the RE ORC UBCS models.It’s my first time so I don’t know many things.I would like to know:
1)Which program should I use to re-texture it, delete parts of the model and replace them, place UBCS symbol on them, create stuff.

Anybody?

Photoshop. I like to recommend few programs for body hacking: milkshape3d, 3dsMax or blender.