Installing Django in a Virtualenv means that i have to re-install it everytime I make another project?
you must activete that new venv ...Scripts/activate.py and enjoy
...and install inside venv django, after that go to you project and run 'python manage.py runserver
thats all
Sorry if this is an obvios or dump question but the thing is that i've been having problems with the installation of Djandgo, and the virtualenvs.
I'm a windows 10 user and I've following a series of tutorials of Django in wich they create a virtualenv an inside of it, using pip, they proceed with the installation of the framework.
The problem is that, I drop the old project or virtualenv wich had Django installed and started a new one, a new virtualenv (creating a new folder and typing virtualenv .), and reinstalled django on it but now, when i go throught the cmd to the directory
J:\project2\Scripts\django-admin.py
I receive and error:

Traceback (most recent call last):   File
  "J:\project2\Scripts\django-admin.py", line 2, in 
      from django.core import management ImportError: No module named django.core

is it because I re-installed again Django in another new virtualenv?
Thanks to all :)