I want to send directory names to a php script. Because I don't won't to create each directory myself.
For example: http://www.domain.com/hello -> send hello to a script
Do I have to do it with an Apache Rewrite rule?
If you want to map http://www.domain.com/hello to http://www.domain.com/somescript.php?hello, then yes, a rewrite rule would do it. So would an AliasMatch rule.
Maybe look at the ForceType directive
http://www.phpbuilder.com/columns/tim19990117.php3