Installing NERDTree on Windows
Windows doesn't use the '.vim' style directories. Instead you should put addons in directory structure branching off a vimfiles directory at one of two places:
c:\users\username\vimfiles\
or
c:\program files (x86)\vim\vimfiles\
For a little more help you can do :h runtimepath, and you could even modify runtimepath to make it work with your .vim directory, but safest route is just to go with the default vimfiles name oon Windows.
None of the other answers worked for me, so I did the following:
- The contents of directory ‘doc’ gets copied to:
C:\ProgramFiles\Vim\vimXX\doc - The directory ‘nerdtree_plugin’ is copied to
C:\Program Files\Vim\vimXX\ - The contents of directory ‘plugin’ iscopied to
C:\Program Files (x86)\Vim\vimXX\plugin\
Where XX is your vim version number. Works for 7.4
Source http://shawn.hamman.co.nz/