for the Vbadvanced CMPS all you need to do is add the snow.js file to your root directory. and it works just fine.
Note: I have it added to my root Dir and My forum root Dir. I just tried it out and it worked. I am sure it can be placed in one dir and the code be edited to a more specific address Again I dont know cause I havent tried it and it was easier just to add it to my main root also at the time
Code:
<!-- Start Snow For Christmas Code -->
<script type="text/javascript" src="http://www.your website .com/snow.js"></script>
<!-- End Snow For Christmas Code -->