Hello, thanks for the positive comments.
I built the website and then integrated parts of the script into it using iframes for the grid and stats box as given in the admin panel under the Pixel Inventory / Get HTML Code.
To alter the background on the user control panel I cheated a little rather than modifying the code I just renamed my background to the same name as the existing one, bg_gradient.jpg and overwrote in the relevant folder. I did add my own code into the header.php file of the user folder so the top logo picture has a homepage link, as I felt you needed some way to get back to the homepage from the user panel.
Hope that helps.