To add Downloader to the list of applications which can automatically startup when the camera is connected to the USB port click on "Events" menu and select "Register for camera events". To unregister Downloader select "Unregister for camera events" from the menu.
Windows Vista: Downloader Pro needs to be run as administrator when the selecting register or unregister for camera events options. To do this simply right click on the Downloader Pro desktop icon and select "Run as administrator". It is only necessary to run Downloader Pro as administrator when registering or unregistering for camera events.
You can modify how programs respond to camera events by clicking on "Scanners and Cameras" in the Control Panel and then clicking on the icon for your camera (on Windows XP "Scanners and Cameras" are located under the "Printers and Other Hardware" category in the Control Panel) or by right clicking on the camera icon in Windows Explorer and selecting "Properties". If only one application is selected, as in the dialog shown below, that application will be launched when the event is detected. If more than one application is selected you will be prompted to chose which application to launch when the event occurs.
Please check that no other events are registered if you have problems with more than one copy of Downloader being launched when you connect your camera.