There is the same setup for the Freeware and the Professional (Shareware) Version. On the first start of Notesbrowser you are asked if you want to use the Freeware version or the Professional version (Shareware). The Professional Edition can be activated anytime with a registration number.
However, if you choose the Shareware version, you can test all features of Notesbrowser free for 60 days. You can always switch between the versions.
Standard Installation (with setup)
Click with the right mouse button on a download image
Choose “Save target as...” and download the file
Localize the file on your hard disk and launch it
Accept all possible warnings from Windows. Do NOT run the setup in a sandbox or similar or your notes will not be saved!