There is already a code for this. Had to go back in the vaults for this one. It really needs to be updated and added to the codes index.
<script>
function change_hello(){
//Created by Agent Moose (http://www.smcodes.smfforfree3.com)
$(function() {
text = "CHANGE TEXT HERE"
a = $("td span b").html()
$("table td.titlebg2 span:contains(Hello)").html(text).append("&nb"+"sp;<b>"+a+"</b>");
});}
change_hello();
</script>
To put an image in there
<img src='URL OF IMAGE HERE' />
This is one of Agent Moose's earlier codes and a very good one.