How do i use the models in Cafe Set 2 ?

[luftwaffe1]

Hi, I'm wondering how i can use the German Skins/model in the Cafe Set 2 section, they are really good high quality models and i would like to use them in Gem Editor but i don't know how can some give me a few pointers on to how to use the models, like using them as skins or something.

So if you can help me that would be great, Thanks in Advance.