Slava

Hi, my name is Slava and I am new to Vim, but experienced in Latex. I am having trouble installing vim-latex properly on MY PC (Windows 7). I downloaded vim-latex suite and tried to follow the instructions on Vim-Latex download page:http://vim-latex.sourceforge.net/index.php?subject=download&title=Download with little success. Could someone, please, explain how exactly to make changes to _vimrc file?   Do I just copy and paste them in _vimrc file in any place i want or there is specific location i should put them in. Also, when I noticed that Vim does not allow to modify _vimrc file giving an error "readonly". Also, helptags ~/vimfiles/doc , the last step in the installation instructions did not work for me. Any help would be greatly appreciated.