It's very simple. Just import the file and change right click on it, click Modify File Properties, change the file path to what its supposed to be (eg. Textures\HeroDemonHunter.blp).
EDIT: You have to restart the Editor to see the skin on the unit.
Maybe you could ask nicely I'm only trying to help.
Usually the file path is included in a readme file or, on this site, on the screen with the link to download it. If it isn't included then you have to get Warcraft 3 Viewer or Wc3 Image Extractor and find the file path of the original skin, or you can use WinMPQ to find the path, although thats much more annoying.
@PyRoBoArDer_5: I don't know about any programs for importing files, but if that program doesn't work you have to do it manually, just refer back to my first post.
EDIT: Sorry PyRoBoArDer_5, I didn't read your post properly. To import a file go into the World Editor, click Import Manager (the arrow going into a piece of paper icon on the toolbar) and click Import File. Then refer back to my original post for the next step.
ok so dont need a program to imort skins? brilliant! lol tanks oz.tho what abotu converting it to what i want liek file type casue arent teh in lim targa or what ever...are the ones on the site in the format i need?
ok nonw of the read me files on this website work..wen ever i open them this is what they say
Das ist ein test textfile
Gruss Christoph
dont know what i means but thats what it says and i dont know where to look i have the thing the warcraft 3 image extractor does that work? if so where do i look?
hey i have a similar question to all of this while we are on the subject. I get how to import skins, but the problem is I dont get how to do models and stuff. I guess one thing I could say to give u an example of what im talking about, is im trying to get the goblin tinker thing to work. I know how to import the stuff from the download itself, however, i have no idea what paths to change the stuff to to get all the skins and models to work.