I've had a look at the source. If there isn't any block item called 'slideshow' then it might be because someone has added the slideshow into the CSS instead of doing it via drupal.
See if you can find anything called 'danland'.
I've found the code which is displaying the image. It looks like it isn't necessarily from within drupal itself unless there is a block called 'danland' or a set up page for something called 'danland' or slideshow.
<div id="slideshow-wrapper"><div class="slideshow-inner"><div id="slideshow-preface">
</div><div class="
/sites/all/themes/danland/images/slideshows/sea.jpg" width="
/sites/all/themes/danland/images/slideshows/noon.jpg" width="
/sites/all/themes/danland/images/slideshows/snow.jpg" width="950" height="135" alt="slideshow 3"/></div></div></div>
Thanks for that. I found this
How to change or add slideshow images
The Danland theme includes a slideshow feature on the front page. By default, only three images are included with the theme, but you can substitute others or add as many pictures as you like. Here's how:
- Select images with width of at least 950px; crop or resize so that final dimensions are 950 x 355 px. Upload into [yoursiteurl]/sites/all/themes/danland/images/slideshows.
- Change or add the URL for your new picture: In the Drupal 6.x version of Danland, make the change in the page-front.tpl.php file; in Drupal 7.x, make the change in the page.tpl.php file.
<div class="slideshow">
<img src="<?php print $base_path . $directory; ?>/images/slideshows/sea.jpg" width="950px" height="355px" alt="Slidesdhow 1"/><!-- change sea.jpg to yourpicture.jpg to replace with your picture -->
<img src="<?php print $base_path . $directory; ?>/images/slideshows/noon.jpg" width="950px" height="355px" alt="Slideshow 2"/><!-- change noon.jpg to yourpicture.jpg to replace with your picture -->
<img src="<?php print $base_path . $directory; ?>/images/slideshows/snow.jpg" width="950px" height="355px" alt="Slideshow 3"/><!-- change snow.jpg to yourpicture.jpg to replace with your picture -->
<img src="<?php print $base_path . $directory; ?>/images/slideshows/your-image.jpg" width="950px" height="355px" alt="Slideshow 4"/> <!-- or add a new image in this statement -->
</div>
But, I can't find those page files.
Also, I see that the images that are already there have the drupal default names of sea, noon and snow, so my guess is that the existing photos have been re-named to those names and then uploaded to a server that no current administrator knows about. I think in future I'll stick to photography and shooting, much simpler...
The replacement banners I have ready are in fact not the ideal dimensions, so I will sort that out and then try again.