(Keiser, OR)  --  A single mother of three is one-million dollars richer.  Karen Crider, who's a waitress from Salem, received a call last Friday from Old Navy, who told her she won the company's Overnight Millionaire Sweepstakes after being one of the first 100 people in line the day before.  Crider received a big check representing the prize yesterday at the Keizer Old Navy.  She says she plans to buy a new house to get her family out of the small duplex where they live.