Check out this article: Manual tricks of NSF to PST to learn the popular conversion methods of NSF to PST i.e. - Export-Import and Setting up Co-existence. Both these methods simply import all the data from NSF file into PST file format without making any changes in the original NSF file. So no needs to worry about losing your NSF file data.

Hope this will help you.       
 

MS PowerPoint is the application of MS Office suite. The people are used this application to create slides presentation files for multiple purposes. Users can make more attractive presentation by adding some objects like file objects, such as: pictures, charts, tables etc But corruption may occurs and can make your presentation file inaccessible. If you are facing such kind of problem then I suggest to use PowerPoint File Recovery tool that will help you to repair corrupt PowerPoint file effectively and easily. You don't need to require any technical skills to run this software.
To get more information about PPT recovery software visit here:http://www.pptrecovery.com/