I've resolved my earlier issues - thanks.
However, I have an issue with the amount of padding above and below my header logo. Now, I've followed the advise elsewhere to modify the CSS for #header .pad, however I'm finding that although this removes the gap momentarily it soon re-appears when the image is drawn.
I had the same problem before I added the advert to the right of this, so I don't think this is the cause.
Is it anything to do with my graphic being 160px high, but specifying in the options to only display it as 80px? This is the advice given (i.e. make the graphic twice as big).
I don't want to remove this padding but, at least, reduce it a little.
My site is at http://www.artiss.co.uk and I've left in the change to the CSS to you can sit it "in action".
Any help would be appreciated.