Auto rescue hopes lift Wall Street at open
* Rising prices of commodities, including oil, spur gains among shares of natural resource companies, with Alcoa Inc up 6 percent.
* Investors on the lookout for a possible vote as early as Wednesday in the House on the $15 billion proposal to aid U.S. automakers -- General Motors , Ford and Chrysler.
* The Dow Jones industrial average up 82.99 points, or 0.95 percent, at 8,774.32. The Standard & Poor's 500 Index up 7.04 points, or 0.79 percent, at 895.71. The Nasdaq Composite Index up 11.92 points, or 0.77 percent, at 1,559.26.
(Reporting by Ellis Mnyandu; Editing by Kenneth Barry)