There are lots of programs around which will zip/unzip files for archiving, but Quick Zip, unlike the majority of these programs, is FREE.- so if you need to zip/unzip your files, you just must download this program.
QuickZip features no ads, no spyware and has been a completely free archiver since 1999. QuickZip allows you to work with 20 encode types and 44 archive extensions. This archiver allows you to List, View, Extract and Modify files in supported archives. Features include : Advanced File Listing, Internal MMViewer, support for drag and drop, search features, bookmarks, scripting etc..