This should work...
AuthUserFile /dev/null
AuthGroupFile /dev/null
RewriteEngine On
RewriteCond %{HTTP_REFERER} !^
http://vodka.domain.com/ [NC]
RewriteRule /*
http://scotch.domain.com/badlink.html [R,L]
Put in notepad and save as .htaccess, then upload to the root directory of your pictures. Hope this helps.
