They are greyed out when I right click, and when I double left click nothing happens. I was told i t was my internet security zone or something, and I set them all to lowest and it said my computer was at risk, and I still couldn't open the files. So I set them back to normal and I need to know why I can't open downloaded files, some examples are Java, and itunes, and what I can do to be able to. Please help. Thanks.