Installing VIM under Windows

_vimrc

set nocompatible
set backupdir=~/tmp       " keep vim's temp files out of your repos

" Use pathogen to easily modify the runtime path to include all plugins under
" the ~/.vim/bundle directory
filetype off                    " force reloading *after* pathogen loaded
call pathogen#helptags()
call pathogen#runtime_append_all_bundles()
filetype plugin indent on       " enable detection, plugins and indenting in one step


function OpenNERDTree()
  execute ":NERDTree"
endfunction
command -nargs=0 OpenNERDTree :call OpenNERDTree()

nmap ,d :OpenNERDTree<CR>        " "comma-d" is used to open nerdtree; use :q to close it

vim_install_info.txt

First, get VIM for Windows at <a href="http://www.vim.org/download.php#pc" title="vim for windows download site">the download location</a>.

Install vim. This may simply be unzipping a folder. Note the location you placed the files.

Next, open a command terminal in your %USERPROFILE% directory, and 
mkdir tmp
mkdir vimfiles
mkdir vimfiles\bundle

cd vimfiles\bundle
git clone https://github.com/scrooloose/nerdtree

Then, go to the VIM install location (whatever it happens to be)
cd %USERPROFILE%\my_apps\vim72

Now, place a copy of the autoloadd/pathogen.vim file into vim's autoload directory. 
(you can copy it from the github page or do a git clone https://github.com/tpope/vim-pathogen)

Finally, edit %USERPROFILE%\_vimrc per the next file.