How do you install your downloaded skin?

The skins are downloaded as .ZIP files.  All you need to do is unzip the file to the "Skins" subdirectory of the program's installation directory.  The default installation directory for the skins is:

C:\Program Files\CobraSoft\PopStop\Skins

(This may be different if you chose a custom location for the installation originally.)

Each skin should have it's own subdirectory within the "Skins" directory.

That's it, once you put the new directory with the files in there, you have a new skin installed.