Hi eeyore,
I am not sure that I am really the best person really to explain the way to do it either.
My method is simply to edit the image within an image editor (in my case gimp) to the size I want the banner image to be on my website i.e. 300 pixels wide. I then upload that image onto the site and position it. Finally I edit the html to make the image clickable and so that once clicked the image takes you to in this case WAB.
So the html would look something like: (Obviously it would be preceded by
(<p><a ) and end with
(/></a>) but if I include these it will not display as text but will try to act as html). Here
href determins what will happen when the image is clicked - i.e. directing the browser to WAB and
src is the location of the graphic on your web site - in this case a WAB banner image. Square bracketed areas [ ] would be the the destination i.e. WAB and the source of the image on your site i.e. the WAB graphic (and the square brackets [ ] would not be included in the html.
href="http://www.
[wildaboutbritain.co.uk]"><img title="WAB" height="20" alt="About" src="http://www.
[yoursite/imagepath/image.jpg]" width="300" border="0" style="FLOAT: left; MARGIN: 0px 5px 5px 0px"