The Folder Size Shell Extension will add a Size tab to the Properties dialog of each drive and folder.
To install the Folder Size Shell Extension:
1. Download D-Folder.zip and unzip it.
2. Expand the D-Folder sub-folder created and double-click Install.exe.
3. Follow the on-screen instructions.
4. For additional information, double-click the dfolder.chm file or just open the Properties of a folder and select the Size tab.
NOTE: An entry is added to Control Panel / Add/Remove Programs.