INSERTS and parameters in visual basic 2005

how do I implemet a parameter for my INSERT statement.
i know that I use the following for an UPDATE, but cannot find any info on how to do the insert.

this is my update code:
sql = "update tblClients set ClientFirstName= @ClientFirstName, ClientLastName= @ClientLastName, ClientMiddleName= @ClientMiddleName where ClientId= @clientID"
                    Dim command As New OleDbCommand(sql, conn)
                    command.Parameters.AddWithValue("@ClientFirstName", txtFirst.Text)
                    command.Parameters.AddWithValue("@ClientLastName", txtLast.Text)
                    command.Parameters.AddWithValue("@ClientMiddleName", txtMiddle.Text)
                    command.Parameters.AddWithValue("@ClientId", _clientID)

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