WinZip 14 Pro will work with previous versions of Windows, not just Windows 7, and adds a new feature for all Windows users: improved security for encrypted files. It will automatically destroy temporary copies of encrypted files created for viewing. It also will work with Intel-based hardware that uses built-in AES encryption. (The Standard version has these capabilities as well.)

These features are added to an already powerful suite of zip archive tools, including the ability to easily zip and mail files, extracting files from .iso images, and overall zip archive management, also available in the standard version.

It also includes the .zipx compression standard introduced in a previous version, which increased greater compression than the standard .zip. That standard will even compress .jpg files, which themselves are already compressed. A found the .zipx standard can shrink .jpg files by as much as 20 percent (WinZip claims to have reached 25%, but PC World reviewers haven't seen that level of compression). That's about 200MB saved for every gigabyte of photos. Again, this is all available in the standard version as well.

Why buy WinZip Pro if zip support is already built into Windows? If you don't use zip archives frequently, then there's no reason to buy WinZip at all; Windows does simple jobs perfectly well. But if you want better compression ratios and better integration with Windows 7, WinZip 14 is worth the upgrade. The Standard version will give you those features. If you want camera import, backup capabilities, and more, you'll want to spring for the Pro version.