Iomega Zip disks, at 100 MB capacity, make some applications possible that otherwise we would still be without. These disks are compatible with Quik Sync--once you have created a Quik Sync Zip disk, files that you designate on your hard drive are automatically backed up to your Zip disk every time you make a change. You don't have to do anything more than install the software, which is available for free by downloading from the Iomega Web site. Quik Sync won't interrupt anything that you're doing, since it does it all in the background. The software can even keep every version of your files, keeping a running version history of your work.