To enter the activation key for Notezilla
1. Right click on Notezilla
icon (next to the clock) in the Windows taskbar.
2. Choose Help->Register menu item. The 'Register' window will appear.
3. In the 'Register' window click on the 'Enter activation key' button.
Make sure that the name specified is same as the license name provided when purchasing the product. The key is really long. Make sure you copy the whole key correctly.