Command Line Zip
If you need to zip files for archiving purposes from command line and do not want to pay for the software, here is a workable solution I came up with:
1. Download and install the command line version of 7-Zip at 7-Zip.org for your version of Windows
2. At a command prompt (on Windows 7 you need to be in the directory where the excutable is stored) enter:
C:Program Files7-Zip>7z a C:Archives