Quote Originally Posted by gstyle
.What did i do wrong?
Pretty much everything you listed above was wrong. As Robert already said, the place to start is the downloading faq. It's also extremely likely that the file that you downloaded does have an extension, but that you have the default setting in windows that hides the extension from you if windows thinks it knows what the file is. This feature should always be disabled, it causes nothing but problems. And you apparently downloaded from a mirror rather than Bittorrent, which can lead to other problems.