Using the scan/rescan dialog you can import data from an external file system into the tree. Select a folder in the file system and let Argentum MyFiles scan and add a new branch into the tree.
Using the scan/rescan dialog you can also update the directory structure information for a particular disk or folder in your tree. In explorer select an item, belonging to the disk or the folder you want to rescan, then click on Rescan. Click the button to rescan. This operation preserves all hand-added properties - all the descriptions you have already added to the items will remain.
In the lower section of the dialog you can watch the process of scanning and importing data. You can interrupt the process at any moment.