Market preview: Stocks are poised to open modestly higher after European finmins agree to a second Greek rescue package. S&P futures +0.3%. Most European indexes show weakness after rising yesterday ahead of the bailout. Nymex oil futures +2.5% to near $105 after Iran refused to ship oil to France and Britain. Wal-Mart -2.9% on lower earnings, but Home Depot +3.2% on its strong quarter.