.htaccess -referer

[Mete]

Hei.

Can anyone write for my a little .htaccess file??

If the referer is *wiss.hacked.in* allow it,
if it comes from another referer, or haven't a referer, deny

I've tryed that:

<Files ~ "\.(gif|jpe?g|png)$">
ErrorDocument 403 http://www.trafficklau.de/ersatzgrafik.gif
SetEnvIfNoCase Referer http\:\/\/(www\.){0,1}wiss.hacked\.in.* Erlaubt

Order Allow,Deny
Deny from all
Allow from env=Erlaubt
</Files>

Sorry for my bad english!

-Mete