Buyers, make sure you really need a gender changer and not a null-modem. It kind of looks the same (9 pin females on both sides), but it is not. The leads are cross wired in a null-modem. Check wikipedia for the difference before you order to avoid disappointment. This gender changer would physically fit, but is useless if you need a null-modem.
Search Amazon for "RS232 Null Modem Serial Cable" instead (found it for 1.70 GBP)