Helping my sister connect her inspiron 1200 notebook to her cable modem wirelessly.  She has her Dimension 8400 wired to her linksys WKPC54G router.  This router came with a card we inserted in the notebook.  Set up security and everything works fine.  Problem is when she shuts down the laptop she looses the connection and has to go throught he process of finding the connection.  Is there a setting some where we are misssing?  Thank you.