From Inside the Box: TV News and Buzz Follow Zap2it:  'The X
Factor': Britney Spears says Demi Lovato and girl power 'really
helped'  britney-spears-x-factor-gallery-2-325.jpgBeginning its
second season in the U.S., the British hit "The X Factor"
returns with two intriguing new factors of its own.  Paula Abdul
and Nicole Scherzinger have departed the panel of judges,
opening slots for Britney Spears and Demi Lovato to join series
mentor Simon Cowell and his fellow returnee L.A. Reid when the
Fox talent competition launches its U.S. sophomore round
Wednesday, Sept. 12, with an episode billed as the first half of
a season premiere that concludes the next night.  For music
superstar Spears -- who started out under similar circumstances
as a "Star Search" contestant -- "The X Factor" provides a major
opportunity for her to redefine herself to the mass public. And
she knows it.  "It's the most different thing I've ever done in
my career," she tells Zap2it. "I've done six or seven tours and
a bunch of albums, and I