using mod_rewrite on broken images?

[Tubby]

Hello,

I host a lot of images that people use on forums and am moving servers, but instead of moving all the images too I thought I\'d clear out and delete them all, but instead of just deleting them so they all show as red x\'s on forums I would like it to show an image telling people how to get the broken image re-instated.

 

So basically, I want to use mod_rewrite in .htaccess so if an image is linked to and it dosent exist I want it to show a default image.

 

I\'ve tried this so far but it dosen\'t work:

 

Options +FollowSymLinks 

RewriteEngine on 

RewriteCond %{REQUEST_URI} !-U 

RewriteRule .(gif|jpg|jpeg)$ [url]http://domain.tld/rolleyes.gif[/url] [L] 

(with my domain)

Am I going about it all wrong?

 

Suggestions / ideas please.

 

Thanks.

 

(is this the right forum for posting this question in?)