The screwdriver or driver bit that you are looking for is called a "Security Torx" driver. I'm faced with the same problem that you have. I don't want to order a new cord until I know that I can get the old one out. The internet says that these drivers are available at Ace Hardware although they may have to be ordered. Several "sets" of these drivers are available on ebay and my guess is that a size T20 will allow me to get to the cord of my Rowenta DE334 "Surfline". Good Luck
J. Cloutier, January 2006