You have requested that '%1' be disabled for Incoming Connections. In order to disable this, you must stop the 'Server' service. ...

You have requested that '%1' be disabled for Incoming Connections.  In order to disable this, you must stop the 'Server' service.  Once stopped, any shared directories or printers on this computer will no longer be available to any other computer.  Do you want to bring up a system console that will allow you to stop the 'Server' service?

Under Computer Management, click System Tools and then click Services.  In the right pane, right-click Server and click stop.