NEW YORK - This time, it was the consumer who had Wall Street rallying. Better-than-expected earnings from consumer brands Best Buy Co. Inc., ConAgra Foods Inc., and Dr Pepper Snapple Group Inc. lifted the Dow Jones industrial average 174 points yesterday to its highest level in six weeks. It has surged 21 percent since hitting a nearly 12-year low March 9. And the technology-dominated Nasdaq composite index is now up 0.63 percent for 2009.