[SQLObject] Newbie Problem w/ PostgreSQL

I'm not only new to SQLObject, but to the whole DB realm in general.

I made a table in PostgreSQL called Site, then I created a class not too
dissimilar from the example in the documentation:

>>> class Site(SQLObject):
...    _columns = [StringCol('url'),
...     DateTimeCol('modified'),
...     StringCol('etag')]
...

But, when I tried to make a new object, it crashed:

>>> s = Site.new(url=lst[0],modified=lst[1],etag=lst[2])
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.2/site-packages/SQLObject/SQLObject.py", line
713, in new
    inst._SO_finishCreate()
  File "/usr/lib/python2.2/site-packages/SQLObject/SQLObject.py", line
732, in _SO_finishCreate
    id = self._connection.queryInsertID(self._table, self._idName,
AttributeError: 'Site' object has no attribute '_connection'
>>> Site._connection = c
>>> s = Site.new(url=lst[0],modified=lst[1],etag=lst[2])
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.2/site-packages/SQLObject/SQLObject.py", line
713, in new
    inst._SO_finishCreate()
  File "/usr/lib/python2.2/site-packages/SQLObject/SQLObject.py", line
733, in _SO_finishCreate
    names, values)
  File "/usr/lib/python2.2/site-packages/SQLObject/DBConnection.py", line
126, in queryInsertID
    return self._runWithConnection(self._queryInsertID, table, idName,
names, values)
  File "/usr/lib/python2.2/site-packages/SQLObject/DBConnection.py", line
72, in _runWithConnection
    val = meth(conn, *args)
  File "/usr/lib/python2.2/site-packages/SQLObject/DBConnection.py", line
437, in _queryInsertID
    c.execute('SELECT nextval(\'%s_id_seq\')' % table)
psycopg.ProgrammingError: ERROR:  Relation "site_id_seq" does not exist

SELECT nextval('site_id_seq')

Can anyone shed some light on a poor newbie?

-- mikeh
--