htaccess hotlinking redirect from direct images

Hello all,

I have searched the entire forum and google, but I can't seem to get this to work.

I am trying to redirect users who click on a link to a direct image such as images/file.jpg

What I want to do is redirect them to mysite.com/viewer.php?file=filename.jpg instead as to prevent hot linking.

Where do I need to add the htaccess file and what do I need to put in it?

Any help is greatly appreciated!

 

http://www.google.com.hk/search?q=apache%2Chotlink&complete=1&hl=zh-TW

 

Thanks for trying to help but I couldn't really find what I was looking for.

I managed to get this working:

RewriteEngine On
RewriteRule ^([A-Za-z/0-9-]+)\.png$ http://www.faveimage.com/script.php?img=$1&type=png&ref=%{HTTP_REFERER} [L,NS]
RewriteRule ^([A-Za-z/0-9-]+)\.jpg$ http://www.faveimage.com/script.php?img=$1&type=jpg&ref=%{HTTP_REFERER} [L,NS]
RewriteRule ^([A-Za-z/0-9-]+)\.gif$ http://www.faveimage.com/script.php?img=$1&type=gif&ref=%{HTTP_REFERER} [L,NS]

Code (markup):

But now the thumbnail doesn't show. I added the appropriate code to the script.php file.