PowerZip

PowerZip is an easy-to-use compression utility that allows you to unzip any files on your computer. You can also create your own zip files using the simple "step-by-step" wizard.

Powerzip supports 11 different zip formats and offers variations of advanced features, including a macro function that allows you to automate zip/unzip tasks (for backups, etc.)
.
The program also integrates with Windows Explorer, so you can quickly extract (or email) files using the right-click menu. It also supports creating self-extracting or encrypted (password protected) archives.

Additional features include archive integrity testing, document display, support for external browsers, etc. Very suitable for beginners.