para instalar avast: 1) baixe setuppor.xxx 2) renomeie setuppor.xxx para setuppor.exe e execute-o 3) ap�s instalado, clique com o bot�o direito sobre o �cone do avast (bolinha cinza com letra "a" na �rea de notifica��o) e selecione "iniciar o anti-v�rus avast!" 4) copie a senha abaixo e cole-a na janela que apareceu renomeie setuppor.exe http://www.avast.com/por/download-avast-home.html dear user, your registration of avast! 4 home edition was successful. please, insert the license key into avast! program as per instructions below. this registration is valid for 12 months and needs to be renewed when that time has elapsed. this can be done simply by filling in our registration form and inserting a new key into the program. your license key is ---------- cut here ---------w61935534h5200a1106-0mudsclz ---------- cut here ---------the license conditions of our home edition allow you to use that key for home, personal and non-commercial use on windows workstation operating systems only.