=INSTALLATION=

Drop the materials folder into your left4dead directory.

Once extracted, open up pak01_dir and find these lines:

$baseTexture "models\infected\witch/witch"
$baseTexture "models\infected\witch/witch_hair"

And change them to:

$baseTexture "models\infected\witch/bitch"
$baseTexture "models\infected\witch/bitch_hair"

Lol isn't that funny :P

Enjoy!
=MilkyWay=