How does a cable news anchor who's bathed in gutter water the past couple years try to show she's still hanging in there? By still hanging in there. Katie Couric, the CBS Evening News anchor still seen at 6:30pm every night though you wouldn't know it, will shut down her primetime convention coverage broadcast and pick up where she left off with a live Internet webcast at 11pm. Viewership will be even slimmer, of course — before the best parts are spliced into YouTube clips for everyone to enjoy.