Turbogears et setuptools

Bonjour,
j'essaie d'installer etiny pour cela j'ai ecrit dans la ligne de commande: easy_install TurboGears
alors il me donne les erreurs suivants:

The required version of setuptools (>=0.6c9) is not available, and
can't be installed while this script is running. Please install
a more recent version first, using 'easy_install -U setuptools'.

(Currently using setuptools 0.6c8 (d:\python25\lib\lib\site-packages))
error: Setup script exited with 2

D:\>easy_install _U setuptools
Searching for -U
Reading http://pypi.python.org/simple/_U/
Reading http://pypi.python.org/simple/-U/
Couldn't find index page for '_U' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading http://pypi.python.org/simple/
No local packages or download links found for -U
error: Could not find suitable distribution for Requirement.parse('-U')

s'il vous plait aidez moi

Je crois que tu as tapé _U au lieu de -U