[QUOTE=daskeyboard;145908]The title of this thread pretty much says it all - I would like to know how to open an already created excel spreadsheet (I want the application to launch).
Thanks so much to anyone who has time to respond to this.[/QUOTE]

you can read worksheet like this

    xlApp = New Excel.ApplicationClass
    xlWorkBook = xlApp.Workbooks.Open("c:\vbexcel.xlsx")
    xlWorkSheet = xlWorkBook.Worksheets("sheet1")

    range = xlWorkSheet.UsedRange

    For rCnt = 1 To range.Rows.Count
        For cCnt = 1 To range.Columns.Count
            Obj = CType(range.Cells(rCnt, cCnt), Excel.Range)
            MsgBox(Obj.value)
        Next
    Next

[url]http://vb.net-informations.com/excel-2007/vb.net_excel_2007_open_file.htm[/url]

[url]http://vb.net-informations.com/excel-2007/vb.net_excel_read_entire%20_worksheet.htm[/url]