如何在windows上使用python 2.7安装漂亮的soup 4 ?

I have windows vista with Python 2.7. I would like to install BeautifulSoup 4 but apparently I can't install Beautiful Soup just by copying the file into the site-packages directory. I have to install pip and then run some commands from the command prompt. Could you guide me through that step by step. I am really a noob so make it very simple. Thanks in advanceI have windows vista with Python 2.7. I would l