Hi all.
I write an asp page to open an excel file then read/write some cell in that file. Here is my source:

    Dim xlApp
    Dim xlBook
    Dim xlSheet

    Set xlApp = Server.CreateObject("Excel.Application")
    'Set xlBook = xlApp.Workbooks.Add
    Set xlBook = xlApp.Workbooks.Open(Server.MapPath(".") & "\a.xls")
    Set xlSheet = xlBook.Worksheets(1)

    xlApp.Application.Visible = False

    With xlApp.ActiveSheet.Cells(1, 1)
        .Value = "Test"
        .Font.Bold = True
        .Font.Name = "Tahoma"
        .Font.Size = 16
    End With
    xlSheet.SaveAs Server.MapPath(".") & "\a.xls"
    xlApp.Application.Quit

    Response.Write "Finish"
    Response.End

When run this asp, an unexcepted error will occur. This code can run well in VB. Please help.
Thanks!

sounds like a permissions thing, although check out http://www.greggriffiths.org/webdev/both/excel/ which covers this topic.