Not sure if I understand this correctly, but a woman who saves Microsoft 2007 Home & Student documents on a USB pen is now prompted for a key when trying open them. The computer had Kaspersky 2010 Internet Security demo installed previously. Don't know if that had a feature that's been enabled and causing the issue. Don't know what brand of USB pen it is, but I doubt it included any encryption ability that's been intentional enabled. Is there some program that can crack USB device passwords?