To get this one working you might do the following :
Extract content of archive into /provider/
Modify single/home.tpl, and right after the </HEAD> put
Code:
<script language="JavaScript" type="text/javascript" src="wysiwyg.js">
and then finaly, amend the skin1/main/product_details.tpl like that for product detail description
Code:
<TEXTAREA id="textarea1" name="fulldescr" cols="45" rows="12" class="InputWidth" id="wysiwyg1">{$product.fulldescr|escape:"html"}</TEXTAREA>
<script language="javascript1.2">
generate_wysiwyg('textarea1');
</script>