Help with using the resources models

I tried to use some of the models from the resources here but the custom texture models didn’t work (obviously, I am doing something wrong) I don’t know how to put them in my map as the instructions say the texture should have no path and the model fails to be loaded when I converted it into mdl with some old converter I had.

what should I do (in baby steps if not too much to ask)? Pleas help (+rep). I tried the Sandman, Fire Starter and Shadow Efreet. the same problem for all.

Can you send models to me and I will check it ? Or you want from me to tell you what to do with "baby steps" to set your own path to texture ?

You know the models in the resources of this site; I don’t know how to use them.
Here is the link to the one I need:

http://www.wc3c.net/showthread.php?t=83799&page=2