Even if you are able to do this, and willing to spend the money, the picture will look like crap because you will be force-compressing the laptop's High Definition image to old TV low definition. Let the tube die my friend.
Usb doesn't carry video so depending on your laptop's features if it has Hdmi, an Hdmi to analog av powered adapter (powered for signal conversion) is possible.
Even if you are able to do this, and willing to spend the money, the picture will look like crap because you will be force-compressing the laptop's High Definition image to old TV low definition. Let the tube die my friend.