This works with Netscape Mail and Microsoft Mail clients and, although we don't know for sure, should work with other mail programs too. That's why most home users have a Dial-In Connection. When you're finished with your tasks, simply disconnect. Of course, you can stay connected all day if you want. But, it's sort of impractical.
Zip files are computer files with the file name extension .zip.
Search engines are Web sites that can look-up and retrieve Internet resources based on a term you input. Let's say you want to look for Web sites that contain information about sky diving. You type the words sky diving in the search engine's dialog box and it will return a list of sites that feature sky diving in their content. There are many search engines on the Web you can use for free. Lycos and HotBot are very good too.