[Typo3] Rewrite problems in backend

[Eckbert P.Dollhofer]

Hi
these are my rewrite rules for use of simulateStaticDocuments:

RewriteEngine On
RewriteLog /var/log/httpd/rewrite.log
RewriteLogLevel 9


RewriteRule 
^(typo3|typo3temp|t3lib|tslib|fileadmin|uploads|showpic\.php)/ - [L]
RewriteRule ^typo3$ typo3/index_re.php [L]


RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l

RewriteRule ^(.*)\.html$ /index.php [L]


Now there is the border.html in the typo3 backend which now is 
rewritten and index.php is returned instead.

My brain has reached it limits due to 35°C room temp. Could someone 
please help me.
Greetings
Eckbert