If I were to copy a very large file or say If I've to copy a lot of text or mp3 files from one folder to another and if suppose there were to be an interruption say there was a power failure, I wld have to go back again and copy the whole file again. So how do I avoid doing that, I mean half the file wld already be in the destination folder. I wld just need to copy the remaining half. Is there a software that can help me do this?