Note: I am currently using windows vistaI recently opened an e-mail which said it was from Facebook, but it turned out to be some kind of scam and as soon as i opened the attachments, it automatically downloaded vista Guardian (rogue anti-virus software),sincethen i have successfully got rid of it and most of it's several problems, but it has left something which appears to be impossible to get rid of :(,If i go on Task Manager it is under the name of: 'csrss.exe', i have been told that this is a trojon, but i cannot get rid of it.. when i try to download something to remove it with it blocks it and says that i have to be an administrator (even though i am), when i try to end it's processes in task manager it says: "Operation could not be completed, access is denied, if i right click on it in task manager it says "perform administrative tasks" should i click this option,I have run out of ideas please help me!!!