Yes, This software allows you to export contacts into a single PST file.
Yes, NSF to PST converter allows you to convert your password protected NSF file to PST format and you can again protect the converted PST file through this tool.
No, none of the software can read Lotus notes data properties of NSF database without Lotus Notes client in a system. So it necessary to install lotus notes client to read NSF database and MS Outlook for creating PST files both on same.
Lotus Notes must be installed and properly configured on system, Ms Outlook should be installed and Free space on hard disk 50 MB, Processor 1GHZ, RAM 512 MB are required.
Except Data conversion limit there is no difference between demo and full version. Demo version has complete functionality of full version but it converts only first 25 data items from each NSF folder to PST, EML or MSG format.