I am getting 2-3 weird emails per day since last week, always different address that I don't know with all kind of subject lines: Hi!; re: undeliverable mail; info etc. Most of those have attachment . I just deleted them without opening them even those without attachments. However I am curious, each time I want to open it to see what it is. I have a web- based email account. Usually I have to click on the attachment to download it and save . Can this stuff install itself without clicking on the attachment? Even on a email like Yahoo! or Hotmail?