1)   skins/css     ,      ,        .
     style_1.css

2)    plugins  plugins,       stylechanger.

3)   skins/put_this_code_into_yourskin_php.txt -    _.php

4)   ,      css,  header.tpl , polls.tpl .
    :

<link href="skins/{PHP.skin}/{PHP.skin}.css" type="text/css" rel="stylesheet" />

  -

<link href="skins/{PHP.skin}/css/{PHP.styleCookie}.css" type="text/css" rel="stylesheet" />

5)      (    )
 :
<a href="plug.php?e=stylechanger&style=style_1">[Style 1]</a> 
<a href="plug.php?e=stylechanger&style=style_2">[Style 2]</a> 
<a href="plug.php?e=stylechanger&style=style_3">[Style 3]</a>


.