During the install process you will need to edit your sites .htaccess file

It is recommended you edit this file in a text editor such as notepad - On your PC, right click the file and select 'open with' and then from the selected programs choose notepad or your preferr ed text editor...

For clarification here's exactly how it should look:

 If you are installing in a subfolder:

## DISABLE HOTLINKING
RewriteEngine on
# Options +FollowSymlinks
RewriteCond %{HTTP_REFERER} !^sitename.com/folder/$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?sitename.com/folder/.*$ [NC]
RewriteRule \.*$ - [F]

or if you are installing in the root of your domain like this...

## DISABLE HOTLINKING
RewriteEngine on
# Options +FollowSymlinks
RewriteCond %{HTTP_REFERER} !^yoursitename.com/$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?yoursitename.com/.*$ [NC]
RewriteRule \.*$ - [F]

Where sitename is your actual site name and folder is the name of your actual folder