This submission contains the update to an SD program which was previously submitted. It now has full support for Version 3 features such as concealed devices and rooted directories. It also contains two network programs to allow fuller control over user passwords in a network. It also contains a program which will take as input a Logical Block Number (LBN) and tell you which file the block is in. Submitted by: Wendy Koenig Strategic Information 80 Blanchard St. Burlington, Mass 01803 617-273-5500