Nokia Connection Manager
Nokia Connection Manager is used for controlling the connection between the phone and the PC when using Nokia PC Suite. You can activate/deactivate connection methods in it, as well as configure (allocate communications ports to) the connection types.
You can open Nokia Connection Manager by selecting Settings > Manage connections in the main window of Nokia PC Suite or from Phone Selector.
For using a phone as a modem, create the connection in Windows. See the section Using your phone as a modem.