Hi Nick, the three images further down the page are part of the template. If you want to change those just send them through to me and I'll get that sorted.
For the header slideshow, these can be done by you or us. If you'd like us to do it, just send through about 10 suitable images and we'll do the rest. We charge $50 +GST for the time to do this. Alternatively, Natalie can send you through some instructions on how to do this yourself. It's important that you follow the instructions so as not to upload very large images that will slow down the loading of your site for visitors.
Feel free to get in touch outside of the support forum for your next steps :D
Have a great afternoon! :D
Founder | Spike@School
Level 1, 6 Garden Place, Hamilton 3204
PO Box 303, Waikato Mail Centre, Hamilton 3240, New Zealand