1. uninstall the Nokia PC Suite 2. download the latest version of PC Suite (the latest one should be 6.81.13.0) 3. install the latest version with the default path 4. reboot your PC 5. connect to your N73 with the cable
At this point, you may be asking for the N73 driver. The driver should be under the installation path e.g. C:\Program Files\Nokia\Connectivity Cable Driver