I find that sometimes when I send a jpeg file to someone over the internet, the file is much larger in physical dimensions for the recipient. eg. I had a 7 cm by 5 cm file at 300 pixels per inch made in photoshop, and saved as a jpeg file. When it was received, it took up over an A4 page when printed. It only appears to happen when the recipient is on windows, but not always. I am working on a mac under OS9. Any explanations as to what is happening, and how to overcome it, please.