Using more than one Skin on a Model?

I have read through the Tutorial by MasterSlowPoke http://www.samods.org/wcwarehouse/tu...e=multipleskin , but I am still a little confused o_O about some of the terms s/he uses...
It sounds a little greedy, but can someone rephrase it [or point the way to another Tut] for me?

Thanks?

that's what this forum's tutorial section is for?

lemme rephrase my problem, I think I was on something when I posted that.

Anyway: I think to have more than one skin on the same model, you need the same model in there twice[right/wrong?]. So how would I export a model from the Editor? [Illidan's model for example]