Alter Export Format Choices Available In Viewer

<p>Is it possible to remove one or more choices for export formats from the export form? I need to provide some export functionality so I do not want to remove the export button. I am passing in a result set at runtime so exporting to Crystal Reports (RPT) is not useable as far as I can tell. When the report file is opened in the full client it cannot find the data source. </p><p>Thanks, </p><p>Ed </p>