Lilith --
Yes, you're right. There's a little sign that sells the body appliers. Thanks! I was a little desperate.
And LittleMe - I bought - I don't want to say at which store, but I bought a skin. The package had all sorts of appliers, but only for heads: skin appliers, makeup appliers, but only for heads. It did have system skins, and I loved it so much that I ran and got a Maitreya body. Then when I tried to apply the skins, it became obvious that they were only for a head.
So, thank God - I did what Lilith recommended (area search) and found the body appliers.
Very confusing, but at least there was a happy ending.