To migrate you NSF file to Outlook PST file one can also try Kernel for Lotus Notes to Outlook. It is widely used software to perform email migration utility. It will support 6.0/ 6.5/ 7.0/ 8.0, 8.5, 8.5.3 and 9.0.1 of Lotus Notes. To download this software
go through
http://www.kerneldatarecovery.com/nsf-to-pst-conversion.html
Or one can also download this software from
http://www.howtoconvertnsftopst.convertnsftopst.biz