Need help making a different version of a model/material.

Right, well I am new to this sort of thing but I have a material of a stalker bandit suit which is brown, I have adjusted the material to white which I wanted and then saved as a different material. However it appears that there are several different other files related to the original bandit suit, which I need to make copies of which link to the new material? These files include VVD, VTX, MDL and PHY.

I would greatly appreciate any help on this,

Do you want it to replace the original, be a brand new model with only that skin, or be able to choose both skins from one model?