Futures dragged into the red ahead of Tuesday's open, despite better-than-expected quarterly reports from Yahoo and Ford. Dow futures dipped 21 points into the red. S&P 500 futures were of four points and Nasdaq 100 futures gave up five points. Yahoo (YHOO) moused over a 4% gain in premarket action. It reported late Monday its fourth quarter adjusted EPS rose 28% to 32 cents, topping consensus views for 28 cents in the company's first full quarter