[What is exact way for how to convert PST to NSF ?]

Choosing best PST to NSF converter is an optimal option to import Outlook files into IBM Lotus Notes. There are many reasons due to which user might switch from Outlook to other email client. Outlook files may become corrupt and thus, you need to migrate these files to recover data. I will suggest you to use NOPE Converter. Efficiency of this converter can be checked by downloading and running trial program. Read more - NOPE

[Migrating From Outlook 2003 to Windows Mail]

Try to convert PST files into Windows Mail manually by using the "Import and Export" feature included in MS Outlook. You can find appropriate steps from related articles.

[How to Convert ODT files To Doc Files?]

If you want to convert multiple files at a time, then search for it in the internet. I am sure you will get several options. But don't forget to check the free demo version before purchasing the licensed one.