Programs for modding please?

First off, what programs do you use to make custom units? As in take parts from other units and implement them on the said unit you want to customize?
Second, what program(s) do you use to re-colour or re-make the UV map for models? Because I'm making custom outfits for my PDF/PDF2nd/PDX models and I need to know how to make UV maps from scratch.
Replies

UV editing can be done on any 3d modelling program: Blender, 3dsmax
Not sure what you mean by the first question
Well, for editing colors that is (because these are the same outfits on some models (Murkywater PMCs share the same vest and bag like the Russian Mercenaries)). Like, do I need Adobe Photoshop? Because if I do, I'll need to find a way to crack it.
UV editing can be done on any 3d modelling program: Blender, 3dsmax
Not sure what you mean by the first question