Jim, here's an excellent promo for the Forum search function, using "export summaries." One of the previous [url="http://mails.datawatch.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=1;t=000120#000000"]posts[/url] with the same question had Gareth Horton explain that it could not be done from the command line, but could be done with VB code through COM. He also had an internal reference to another post that had excellent code for doing this.
One of the code examples should serve your purpose. You would need to modify it slightly for your .prj file usage.
[size="1"][ May 18, 2006, 05:51 PM: Message edited by: Todd Niemi ][/size]