Hi,
There is a field like that, it is called "Date" in the downloaded CSV file, and the URL should have "cDateUpdated=1" AND "Version=1.0", earlier versions don't have this option. By default this field is included in the output.
You can create URL's for download here:
http://www.rapnet.com/RapNet/DownloadListings/download.aspxRegards,
Leo