Basic Modem information

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Dear, i am sending sms through visual basic2008 by Serialport1.The code that i am using for sending sms is

Try
           If SerialPort1.IsOpen Then
               With SerialPort1
                   .Write("AT" & vbCrLf)
                   .Write("AT+CMGF=1" & vbCrLf)
                   .Write("AT+CMGS=" & Chr(34) & Label1.Text & Chr(34) & vbCrLf)
                   .Write(RichTextBox1.Text & Chr(26))
                   'Put some code in here to send the SMS
                   Label3.Text = "sending SMS to " + Label1.Text
               End With
           Else
               MsgBox("Sorry ! there is some error in your computer port")
           End If
       Catch ex As Exception
           MsgBox(ex.Message)
       End Try

And this code is working Fine.
I am using Nokiac210 mobile as my modem and want to get modem information such as Modem Company name, modem(mobile)IMEI number,Sim information,Battery status etc.But i have no idea about of this.Please help me for solving my question.