Hello , had a strange download when I visited a site stated it was a securioty programe but not one I was a member of . Thought i deleted the whole programe. Only thing is i have a annoying little pop up with the message Crtitical System Errors , it keeps flasing and when you click on it get a message sating pc is infected with both a trojan and a worm and takes me to a download site to install software. Now I have adware and Norton do not need this and cannot find how to delete Can someone help please