U.S. stock index futures signal gains, Adobe eyed
December 21, 2010 at 04:38 AM EST
* U.S. stock index futures pointed to a higher open on Wall Street on Tuesday, with futures for the S&P 500 up 0.36 percent, Dow Jones futures up 0.32 percent and Nasdaq 100 futures up 0.27 percent at 0928 GMT.