How to Install Noteskins:

1) Determine how the noteskins are packaged.

path in archive         | extract to
------------------------|-----------------------
NoteSkins\dance\MyDance | StepMania root folder
dance\MyDance           | NoteSkins folder
MyDance                 | Whichever gametype folder (see Step 2)

2) Figure out the game type if necessary.

Valid gametypes:

name    | description
--------|------------
beat    | beatmania (5 and 7 keys)
dance   | dance dance revolution (4 panels)
kb7     | keyboard 7
lights  | lights (unused)
maniax  | dance maniax (4 receptors)
techno  | techno motion (4, 5, and 8 panels)
popn    | pop'n music (5 and 9 keys)
pump    | pump it up (5 panels)

3) extract based on steps 1 and 2.