From my pc to ipad overwrite problem

Hi all experts,
I have a problem. Problem is related to my iPad. I can’t send any image to my iPad from my computer. I need to copy some images from my computer to iPad but when I try to copy the image it overwrites the iPad folders. One thing I need to mention, I can copy a whole folder to may iPad from my computer.
I need a solution, to copy the image files without over writing from my computer. I have a problem with the software.
What should I do now at this point?
