I modified my codes based on your example. I get no errors but the inserted fields do now show up in the gridview2

Code:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim iconn As New Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\HP_Owner\My Documents\Visual Studio 2005\MyFinalWebSite/db1.mdb")
        Dim SQL As String = ""
        SQL = ("INSERT INTO [Table1] Set [LName] = '" & TextBox1.Text & "',[FName] = '" & TextBox2.Text & "', [Known] = '" & TextBox3.Text & "' ")

        Dim xcmd As New Data.OleDb.OleDbCommand(SQL, iconn)
        Dim ida As New Data.OleDb.OleDbDataAdapter(SQL, iconn)

        Dim ds As New Data.DataSet

        iconn.Open()

        ida.InsertCommand = xcmd


        GridView2.DataSource = ds.Tables("Table1")
        GridView2.DataBind()

    End Sub