News At Seven-Thirty highlights:tougher measures to tackle drink driving;Mai Po Nature Reserve closed for 21 days after a dead bird discovered there last week tested positive for avian flu;police charged a 24-year-old man with the murder of two sex workers;serious drought in at least 8 mainland provinces;Hillary coming to Asia for her first trip as U.S secretary of state;India directly accused Pakistan’s military intelligence agency of involvement in Mumbai terror attacks;over 100 trees chopped down in a Sai Kung conservation area;excessive amount of metallic residue found in over a dozen of vegetable and seafood samples;a large fishing vessel from HK caught fire off Macau;a restaurant in London offering "credit crunch" lunch.