To add test to the search box, like the text shown above in the search box on this page,

Go to Admin/Skins/Search.aspx
Add the text you want in the box to the line starting with:

<asp:Textbox ID="txtSearch"

Or another way is to paste the code below into notepad and change the content between the quotes on the .val lines to your desired text. There are two of them.

$(document).ready(function () {
$('#dnn_dnnSEARCH_txtSearch').val('Seek and ye shall find...'); //add the search text to the search input
$("#dnn_dnnSEARCH_txtSearch").focus(function () { //clear the default text out of the search input
if ($(this).val() == "Seek and ye shall find...") { $(this).val(''); }
});
});


Name the file something like searchtext.js

Then upload the file into the skin's js folder.

Then insert the following connection to the js file near the top of the skin file

<script type="text/javascript" src="<%= SkinPath %>js/searchtext.js"></script>

Restart the app pool.