I have a new Dell computer with vista. When I want to down load application files from the internet, I am usually presented with a button that says something like "DOWNLOAD NOW". When I click on the button, I get a screen that says "save this file" or "cancel". When I click on "save this file", nothing happens. Can anyone tell me what I'm doing wrong? Incidentally, I am trying to download software to extract zipped files. Can anyone recommend a good free unzip program for doing this?

Thanks for any help in this. John.