Why my stylesheet won´t load into my node/add forms? (D6)
I´ve found the solution:

&lt;?php 
      if ((arg(0) == 'node') &amp;&amp; (arg(1) == 'add') || (arg(2) == 'edit')){
    $node = node_load(array('nid' =&gt; arg(1)));
    print $title;
    }
?&gt;


Thanks to nevets, who gave me the hint that I needed! :)