There is no command line switch for appending to xls.
In V6 and V7 Pro, you can use OLE Automation to append data using the JetExportTable and JetExportSummary methods and in V7 Pro, you can create a project which will enable you to append data using command lines to run the project and the export jobs contained within it.
I need more information on the switches in autoscripts. The problem I'm trying to research is using the append feature with a two Project Monarch piece. I'm assuming there is a switch after the xls for the second export that appends the data. I could write a macro but I'd rather do it within the autoscript if possible. /b[/quote]