How do I know when they're running? I want to run them when using my rendering packages, but there's nothing that tells me that the NVIDIA Graphics card is being used, instead of the Intel Graphics...
Click Start and then Control Panel. Select Classic View from the left side of the window.
Double-click NVIDIA Control Panel.
Click View and next Display GPU Activity Icon in Notification Area.
Click the new icon in the notification area. A pop-up will show applications using the NVIDIA graphics. When the NVIDIA graphics is not used, it will show None.