I have received a letter from australia international lottary programme that i have won $400,000USD so its tru

It's fake and this stuff is now happening in snail-mail, faxes, and phone calls also. You have not won the lottery, you have not been randomly selected for a great business opportunity, you have not inherited some Nigerian billionaire's money, you are not the one millionth visitor to a web-site and Google is not waiting for you to forward a chain letter before it saves the life of a baby with cancer.