I have done all the stuff that you told me to do except the set global renders
??????
i thought thats all i told you to do??
anyqway., render globals is the icon next to the render icons.., (clapper boards) at the top right on your status line. you will find it very difficult indeed to render if you dont know where the render globals live 
worth a look!
best of luck
take it easy and life will be easy