Ahhhhh, the penny drops, this is a scripts thing. I wrote the page using ALS Script if you don't have that then IE use's a standard script (I think). AlS script at a font size of 72 looks about two thirds the size of some other scripts, so if your browser displays it as another script then it takes up more space than the original. I've changed it to Edwardian script, does that resolve it?
Many thanks for that Royb

Nick