Fileinformation

Hi, i want to get the information about filesize, date of last changes ans so on of files in a specific directory. I tried this code: <? $handle=opendir("d:\audio"); echo $handle, "<br><br>"; while ($file = readdir($handle)) { echo $file, " ", filesize($file), "<br>"; } closedir($handle); ?> but the only thing that works is to show the directory contents. I'm getting Filesize 0 for the "updirectory symbols" . and .. ! For Filesize i don't get anything. Has anyone else tried this under Windows NT? Hoping for help, Markus