Response.ContentType = “application/vnd.ms-excel”
            ‘Additional Test Code for CSV
            ‘Response.ContentType = “text/plain”
            If ReturnXYCoords Then
                Response.AppendHeader(“Content-Disposition”, “inline;filename=results.csv”)
                Response.Write(GetCSV(records))
                Response.End()
            End If
http://www.15seconds.com/issue/970515.htm
Check out how changes to this Response.ContentType can effect the type of results returned to the calling browser.
Response.ContentType = “application/vnd.ms-excel”