Choose a suitable room for film projection. It should be large enough to accommodate the projector, the camera and the surface on which you will project the film. Turn off all sources of light in the room. It should be as dark as a movie theater. You may need to use thick cloth or boards to block all unwanted light sources coming from the sides and corners of the room's windows and doors.
Set up your projection surface, ideally, a large white cloth or board. You can also use a white wall, especially if it's clean and free from any marks.
Secure the film projector on a flat and stable surface just in front of the projection surface.
Secure the video camera on a tripod next to the projector. You are going to be recording the film images projected on the surface, so you want to get a similar angle with the camera.
Turn on your projector. Adjust its distance, height, focus and other visual requirements in regard to the screen if necessary.
Set the camera to record the footage. Start the film. Record the images for about 20 seconds, then stop. Review the video recording and adjust the camera's zoom, exposure, brightness, focus and other visual requirements as necessary to acquire the clearest images.
Begin the official recording and playback of the film footage using the projector and the camera. When finished, stop the projector and the camera.
Connect the camera to the computer with the applicable USB or FireWire cable.
Open a video-editing program in your computer. Transfer the images from the camera to the computer using the program's "Capture" or "Import" button. When the transfer is completed, you will have a digital copy of the original 8 mm film footage in your computer. You can use this master file to make copies of the footage for your multimedia devices or copy it onto a DVD.