How can I deactivate ThinkVantage Access Connections?
OK, its more simple than I thought - just uninstall ThinkVantage Access Connections in the "Add and remove programs" dialogue in the Control Panel. Each component of the ThinkVantage suite can be uninstalled individually.
Make sure that the "wireless zero configuration" service is set to start automatically by going to control panel>administrative tools>services>wireless zero configuration, right click, select properties and then set it to start automatically. After that, check in the thinkvantage access control for an option to disable itself and allow windows to manage your connections.