How to connect Biometrix machine to Website in C# VS2005

protected void btnconnect_Click(object sender, EventArgs e)
   {
       if (btnconnect.Text == "Connect")
       {


           zkemkeeper.CZKEMClass axczkem1 = new zkemkeeper.CZKEMClass();
//here above line shows the error (Retrieving the COM class factory for component with CLSID {00853A19-BD51-419B-9269-2DABE57EB61F} failed due to the following error: 80040154.)

           int port = Convert.ToInt32(txtportno.Text);
           string ipaddress = txtipaddress.Text;
           flag1 = axczkem1.Connect_Net(ipaddress, port);
           if (flag1 == true)
           {
               btnconnect.Text = "DisConnect";

               lblState.Text = "Current State:Connected";
               iMachineNumber = 1; 
               //axCZKEM1.RegEvent(iMachineNumber, 65535); 
               tlbdeviceinformation.Visible = true;

           }
           else
           {
               axczkem1.GetLastError(ref idwErrorCode);
               tlbdeviceinformation.Visible = false;
               gp.DisplayMessage(this.Page, "Unable to connect the device,ErrorCode=" + idwErrorCode.ToString() + "Error");
           }
       }
       else
       {
           btnconnect.Text = "Connect";
           tlbdeviceinformation.Visible = false;
           txtipaddress.Text = txtportno.Text = "";
           lblState.Text = "";
           ddlMachineNo.SelectedIndex = -1;
           Response.Redirect("Device_Management.aspx");
       }