Notezilla stores data under :%AppData%\Conceptworld\Notezilla. To do this, copy this path %appdata%\Conceptworld\Notezilla and run from start menu or open in Windows Explorer
Alternatively, To know where Notezilla stores the data, go to Notezilla 's Preferences and click on the Advanced tab. To access Notezilla 's Preferences, right click on Notezilla icon and choose Preferences from the menu. Copy the whole path and open it from Windows start menu.
Every user's data is stored in separate file. You can change this location to a centralized server also (using Notezilla 's Preferences). But Notezilla would fail if it cannot access the centralized server.