I don't know if there is a function to do this on your camera, but on the cameras I am familiar with, there is not.
However, if what you want to accomplish is to get your pictures from internal memory into your computer, there is a way. Simply remove the memory card from your camera before connecting the camera to your computer. The computer will then see the camera's internal memory instead of the card memory, and you can copy the pictures over.
If you have been accessing your pictures by removing the card from the camera and placing it in a card reader attached to your computer, then this won't work for pictures in the internal memory. You will need to use the other method, connecting the camera to the computer with the USB lead.
Answers & Comments
I don't know if there is a function to do this on your camera, but on the cameras I am familiar with, there is not.
However, if what you want to accomplish is to get your pictures from internal memory into your computer, there is a way. Simply remove the memory card from your camera before connecting the camera to your computer. The computer will then see the camera's internal memory instead of the card memory, and you can copy the pictures over.
If you have been accessing your pictures by removing the card from the camera and placing it in a card reader attached to your computer, then this won't work for pictures in the internal memory. You will need to use the other method, connecting the camera to the computer with the USB lead.