I'm a bit confused about the stuff with downloading skins.

Do I just have to get the .jpg file or do I also have to get a .dds file as well?

And do I just put this .jpg in the LFS/data/skins folder with "XRT_blabla.jpg" (for example)? And what is it with the dds anyway?

And is there a way to download skins ingame too?

PS: So I just save the .jpg which are provided by many people here in the skin forum in the skins folder?

PPS: I've already got skins but that is like 1 year ago so I can't remember anymore >.<