manage.py MySQLdb import errors but I'm using Postgres 8.4?!

Hi, I am following the instructions here to great success but I've hit a snag when going to run the manage.py script to create the database tables.

I have Postgres 8.4 installed and configured, because I desire its full text search, but I get errors seemingly to do with forum_modules wanting mysqlfulltext.

I am a newbie to configuring OSQA so this has me confused. Any advice on what I'm doing wrong would be appreciated. BTW I am using today's latest svn trunk.

Here are the manage.py errors:

Traceback (most recent call last):
  File "/opt/osqa/forum_modules/mysqlfulltext/__init__.py", line 8, in <module>
    import MySQLdb
ImportError: No module named MySQLdb
Traceback (most recent call last):
  File "/opt/osqa/../osqa/forum_modules/mysqlfulltext/__init__.py", line 8, in <module>
    import MySQLdb
ImportError: No module named MySQLdb
Traceback (most recent call last):
  File "manage.py", line 13, in <module>
    execute_manager(settings)
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 261, in fetch_command
    klass = load_command_class(app_name, subcommand)
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 67, in load_command_class
    module = import_module('%s.management.commands.%s' % (app_name, name))
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 7, in <module>
    from django.core.management.sql import custom_sql_for_model, emit_post_sync_signal
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/core/management/sql.py", line 6, in <module>
    from django.db import models
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/db/__init__.py", line 78, in <module>
    connection = connections[DEFAULT_DB_ALIAS]
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/db/utils.py", line 93, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/db/utils.py", line 33, in load_backend
    return import_module('.base', backend_name)
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/opt/ActivePython-2.7/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 24, in <module>
    raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named psycopg2

And my settings_local.py database settings are:

DATABASES = {
    'default': {
        'ENGINE': 'postgresql_psycopg2',
        'NAME': 'osqa',
        'USER': 'uosqa',
        'PASSWORD': '********',
        'HOST': 'localhost',
        'PORT': '',
    }
}