You can select which pictures to add to the My Pitures folder. If you add pictures which are alreay there, the system will probably inform you that a file of the same name is already there and ask you whether you want to replace it with a new one.
If the pictures in the memory card are all that you have, I would create a new folder away from "My Pictures" and download all the pictures there from the memory card. Have you think about making copies(i.e. backups) of these photos to an external storage medium, e.g. CDs, external drive,... ?
I have a Canon PowerShot A540. I bought a SanDisk MobileMate memory card reader for my camera's memory card. Some, but not all, of the images were previously saved to My Pictures some time ago. I usually print out photos from the memory card.
Is it possible to only add the images in My Pictures that are not already stored there or will they ALL be added resulting in duplicates? If so, how? Having them all added, making for many unnecessary copies, would entail much time and effort to delete the extras. I tried highlighting some newer photos, but it seemed as if the program still wanted to start from the first photo so I canceled.
Can this be done by using the interface cable between the camera and the pc?
At this time, Irfanview is the photo editing program.