I have a program written in VFP 7 that now needs to download and unzip some files from an FTP site. I am using West Wind's wwIPStuff class to download the files, but what is the best way to unzip those files on Windows 2003 Server?

Is there something built into Windows 2003 I can call to unzip the files (I don't need to zip them), or should I look at a 3rd party solution like Dyna Zip?