HELP! Installing downloaded content on a MAC MAC, content, Installing, downloaded, HELP

I've followed all of the instructions to the best of my ability.
but for some reason I can't get any of the skins I downloaded from this site to work on my iMac.

Anyone have any advice?

1# korup12
here is the help http://www.peggyzone.com/forum/v ... %26amp%3Btypeid%3D1