I've used GreaseMonkey here to do it. If anyone uses FireFox and wants the script here it is:
Code:
// ==UserScript==
// @name Remove Logo
// @namespace pua
// @description Removes Logo from
// @include http://www.puaforum.co.uk/*
// ==/UserScript==
var header = document.getElementsByClassName('header_bg');
header[0].style.display = 'none'; // This hides the big image...
document.title = 'about:blank'; // This is to get rid of tab title...