http://www.javascriptkit.com/howto/htaccess.shtml
http://de.selfhtml.org/servercgi/server/htaccess.htm
http://httpd.apache.org/docs-2.0/misc/rewriteguide.html
http://httpd.apache.org/docs/mod/mod_rewrite.html
http://www.heise.de/ix/artikel/1996/12/149/