hi, i am working with uploading a file where condition are it need to be only jpeg and of some width and height if the uploaded is not of that height and weight it must not upload and most important ,there is a folder where a image name full.jpeg is available, so now i need to replace the new with old image but with same image name means full.jpeg with different content(image) so please let me know how to do as i am new to .net and its urgent