US STOCKS-Wall Street climbs as yields pull back

(For a Reuters live blog on U.S., UK and European stock markets, click or type LIVE/ in a news window.) * Treasury yields slip after rally * Focus on ISM services sector data * Dell slips as forecast disappoints * Indexes up: Dow 0.24%, S&P 0.47%, Nasdaq 0.63% (Updates to market open) By Sruthi Shankar…