Pl -2303 Usb-serial Drivers I Have Installed DKU-5, PL-2303 Driver And The Latest Nokia PC Suite But Still My Phone Is Not Recognized..?

I have installed DKU-5, PL-2303 driver and the latest nokia PC suite but still my phone is not recognized..? - pl -2303 usb-serial drivers

The phone must be safe, or a lock pin for this "not so accepted that ss, unlocked.