Angus, you've calculated the number of bytes per gigabyte. You have to convert gigabytes to megabytes. Multiply your 188 Gigabytes by 1,024 Megabytes per Gigabyte and divide by that number. It won't work out exactly as you might expect due to other factors, some of which have been mentioned here in other emails. As far as I know there are 1,048,576 bytes in a Megabyte. That's 1,024 Bytes per Kilobyte times 1,024 Kilobytes per Megabyte. Jerry __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind