Cannot import name find_packages?

This is likely a rookie error, but im in the early stages of learning python.

• Running Win7 64bit
• Python is 2.7.2 64bit, python runs fine from CMD prompt.
• I downloaded TweetStream. and its under c:/
• Opened the setup.py in pyscripter.
• Executing it, I get this error:

Not too sure what I have done wrong, or how to rectify this problem.
Here is a short screencast if it sheds anymore light.

EDIT - in response to comment.

c:\tweetstream-1.1.1>python setup.cfg install
  File "setup.cfg", line 2
    tag_build =
               ^
SyntaxError: invalid syntax

Maybe this can help you. Otherwise, you can install setuptools in your python, I don't think you have it installed. setuptools