VB Express 2008 : Saving imported datagrid to mdb

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VB

MS-Access

DataGridView

Hi All
I am not that experienced. I am using VB Express 2008. I have a problem. I am importing a csv file in a datagrid with the following code :

Private Sub btnFindFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnFindFile.Click
        Dim OpenFileDialog As New OpenFileDialog
        OpenFileDialog.InitialDirectory = My.Computer.FileSystem.SpecialDirectories.Desktop
        OpenFileDialog.Filter = "CSV Files (*.csv)|*.csv|All Files (*.*)|*.*"
        OpenFileDialog.Title = "Select A CSV File"

        If (OpenFileDialog.ShowDialog(Me) = System.Windows.Forms.DialogResult.OK) Then
            Dim FileName As String = IO.Path.GetFileName(OpenFileDialog.FileName)
            Dim Path As String = IO.Path.GetDirectoryName(OpenFileDialog.FileName)
            Dim connString As String = "Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=" _
                & Path & ";Extended Properties=""Text;HDR=No;FMT=Delimited"""
            Dim conn As New Odbc.OdbcConnection(connString)
            Dim da As New Odbc.OdbcDataAdapter("SELECT * FROM [" & FileName & "]", conn) 
            Dim dt As New DataTable
            da.Fill(dt)
            ItemsDataGridView.DataSource = dt
        End If
End Sub

The code is working perfectly, and display all the content of the csv file in my datagrid. My problem is the following: I cannot figure out how to save the imported info in the datagridview, to my mdb database.
I have tried the following, but with no luck :

Me.ItemsTableAdapter.Fill(Me.ItemsDataSet1.Items)
        Me.Validate()
        Me.ItemsBindingSource.EndEdit()

Any help would be appreciated.
Maybe I should just mention: I am trying to save into an existing Access mdb database, where the table has more columns than the imported csv file.