This program allows you to synchronize the contents of folders at work and home computers (using Iomega ZIP or CDRW drives). Also Samedir is an advanced backup tool. Program uses compression to work better. It works more efficiently then backup programs I know. It's very easy to use this program! Just select your source (working) folder and target (ZIP or CDRW) folder and choose the operation ("Compress", "Compress fast" or "Copying"). To update the home computer folders select source (ZIP or CDRW) and the corresponding target folder at your home computer and choose "Decompress".