If you want to sync a particular file or a folder present outside your Dropbox folder to the Dropbox cloud, then you must move or copy it explicitly to the Dropbox folder on your system. To avoid that extra step of moving or copying, I came up with an article about a add-on for Dropbox called Drop shell which lets you add files directly to the Dropbox folder using the right click context menu.
In this article, let us move a step closer and make use of the built-in windows utility (the Send To context menu) to add files directly to the Dropbox folder. This method of adding files unlike Drop shell to your Dropbox makes use of your System’s Right click “Send To” Context menu. This method will add your Dropbox folder’s destination path to the right click Send To context menu thus allowing you to directly send a selected file or a folder to your main Dropbox folder.
How to employ this method
On Windows XP
Navigate as follows
C:\Documents and Settings\User\SendTo
Note: - if the SendTO folder is not visible, then you must enable Show the Hidden files and folders settings under Tools.
Once you are in the SendTo folder, right click on an empty area and create a New Shortcut.
Enter the Location of the Shortcut as follows (this should be the location where your Dropbox folder is present).
Once you are done with creating the Shortcut, then a menu item called Dropbox will be added to the Send To context menu when you right click on a selected file or folder.
So, when you want to send a file or a folder to your Dropbox, right click on it, point your mouse over Send To and click on Dropbox. The file will be automatically sent to your Dropbox folder.
The difference between this method and the previous method using Drop shell is that Drop shell method allows you to move or copy files and folders to the Public folder, Dropbox main folder and sub folders whereas this method allows you to send files only to your Dropbox main folder.