Simply double-click on the ZIP file, and WinZip does the rest. The main reasons for producing archives with WinZip include Compression of large files to help save space on your hard disk drive. Combining together a number of files of related functional purpose into one smaller 'zip' file. Combining these first two functions to produce files which are eminently suitable to transfer electronically across the Internet. WinZip archives are all but the de facto standard for files for downloading from the Internet.
Smaller files mean a faster download, and faster downloads mean less on-line time and so lest cost.
Smaller files and faster downloads are also good things generally as they reduce the stress load on the Internet itself. The extent to which WinZip can compress files is dependent on the file type. For example, I was able to compress one 5MB graphics file to less than one-fifth its previous size. This meant that the original file could now be stored on one floppy disc, and that the time to send the file as an attachment across the Internet was also reduced to one-fifth, a substantial time and money saving. WinZip is not just for Internet hacks.