'easy_install' is not recognized as an in internal or external command, operable program or batch file

I have just downloaded and installed the latest version of Python on my Windows 7 machine.

Python 2.7.3

Now I want to install a Twitter library I found online:

However when I try to run easy_install tweepy, I get this error message:

'easy_install' is not recognized as an in internal or external command, operable program or batch file.

Python has already been placed into my path, as I can invoke the Python program into the command line.

Here is a screenshot of my folder where Python is installed.

And inside the Tools folder:

And inside the scripts folder: