US DOLLAR INDEX AT 77.61, EURO AT 1.37 VS USD // WEAKENING IN DOLLAR INDEX IS HOLDING COMMODITIES ESP BULLIONS HIGHER/inr opens 45.72 stronger by 18 paise/COPPER TRADING HIGHER ARD 0.40% EXP OPEN ARD 454/CRUDE TO OPEN MARGINALLY DOWN ARD 4215/SILVER MINBI ARD 43750-800/