Download URL ( external) should not download via 4images

[binuj01]

Hi,
How can I make sure that the "URL" ( external) entered in the Upload form, should directly download from the external site and not through 4images, as that will cause heavy server usage. Now I usually edit the image and then copy the URl from ( "Image file ") to the " Download URL" section in ACP.

Thanks for the replies,
Binu