ok I looked at your page here:
http://www.peters-properties.co.za/home.html
and I still saw a few mixedcase filenames such as
<img src="img/4sangster.JPG" width="55" height="55" alt="Howick House" />
Remember I do not have access to you web site (I cannot for example see what are your picture filenames), so I cannot tell you what the problem is
Norrmally if pictures do no display on the Internet but they do display on you home PC it is always either a problem with the filenames that do not match between what is in your html and the picture filename, or the path to the pictures are incorrect if you used subfolders.
If you can see the exact filenames then make sure that the file 4sanster.JPG is named precisely that and not for example 4sangster.jpg. Also make surte your img subfolder has the name img and not for example IMG