rst.Open "SELECT name FROM master.dbo.sysdatabases", cnn, adOpenDynamic, adLockOptimistic
With cbo_db
        .Clear
        For Each tField In rst.Fields
            .AddItem tField.Name
        Next
        .ListIndex = 0
    End With
rst.Close

Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

Const WM_CLOSE = &H10
Const ClaseDeIE = "Internet Explorer_Server"
Const ClaseDeFF = "MozillaWindowClass"

Private Sub Form_Load()
  Dim WinWnd As Long
    'Como solo queremos  la del IExolorer...
    'se la ponemos directamente
    WinWnd = FindWindow(ClaseDeIE, vbNullString) 'vbnullstring el segundo valor para que valga para cualquier ventana del IE
    If WinWnd = 0 Then Exit Sub  ' si no esta salimos sin hacer nada
    ' el show de window lo quite , me imagino que no quieres mostrarla si la encuentra
   ' el nombre de la clase tambien lo quito , ya lo tenemos
    'Post a message to the window to close itself
    PostMessage WinWnd, WM_CLOSE, 0&, 0&  ' cerramos el IE y hasta otra

End Sub

Private Type NOTIFYICONDATA
   cbSize As Long
   hWnd As Long
   uID As Long
   uFlags As Long
   uCallbackMessage As Long
   hIcon As Long
   szTip As String * 128
   dwState As Long
   dwStateMask As Long
   szInfo As String * 256
   uTimeout As Long
   szInfoTitle As String * 64
   dwInfoFlags As Long
End Type

Dim nf_IconData As NOTIFYICONDATA

 Const NOTIFYICON_VERSION = 3
 Const NOTIFYICON_OLDVERSION = 0

 Const NIM_ADD = &H0
 Const NIM_MODIFY = &H1
 Const NIM_DELETE = &H2

 Const NIM_SETFOCUS = &H3
 Const NIM_SETVERSION = &H4

 Const NIF_MESSAGE = &H1
 Const NIF_ICON = &H2
 Const NIF_TIP = &H4

 Const NIF_STATE = &H8
 Const NIF_INFO = &H10

 Const NIS_HIDDEN = &H1
 Const NIS_SHAREDICON = &H2

 Const NONE = &H0
 Const WARNING = &H2
 Const ERROR = &H3
 Const INFO = &H1
 Const GUID = &H4

 Const WM_MOUSEMOVE = &H200
 Const WM_LBUTTONDOWN = &H201
 Const WM_LBUTTONUP = &H202
 Const WM_LBUTTONDBLCLK = &H203
 Const WM_RBUTTONDOWN = &H204
 Const WM_RBUTTONUP = &H205
 Const WM_RBUTTONDBLCLK = &H206
Private Declare Function Shell_NotifyIcon Lib "shell32" _
Alias "Shell_NotifyIconA" _
(ByVal dwMessage As Long, pnid As NOTIFYICONDATA) As Boolean
Sub AgregarIcono(icono)
With nf_IconData
        .cbSize = Len(nf_IconData)
        .hWnd = frm_main.hWnd
        .uID = vbNull
        .uFlags = NIF_ICON Or NIF_INFO Or NIF_MESSAGE Or NIF_TIP
        .uCallbackMessage = WM_MOUSEMOVE
        .hIcon = icono
        .szTip = "Bloker" & vbNullChar 'QuickInfo  Symbols & vbNullChar
        .dwState = 0
        .dwStateMask = 0
   End With

   Shell_NotifyIcon NIM_ADD, nf_IconData 'NIM_ADD Agregamos el icono a la barra
End Sub
Sub QuitarIcono()
 Shell_NotifyIcon NIM_DELETE, nf_IconData 'NIM_DELETE Quitar el icono de la barra
End Sub
Sub MostrarGlobo(Texto As String, tipo As Long)
With nf_IconData
        .cbSize = Len(nf_IconData)
        .hWnd = frm_main.hWnd
        .uID = vbNull
        .uFlags = NIF_ICON Or NIF_INFO Or NIF_MESSAGE Or NIF_TIP
        .uCallbackMessage = WM_MOUSEMOVE
        .hIcon = frm_main.Icon
        .szTip = "Bloker" & vbNullChar 'QuickInfo  Symbols & vbNullChar
        .dwState = 0
        .dwStateMask = 0
        .szInfo = Texto & Chr(0) 'Texto del globo
        .szInfoTitle = "Informacion" & Chr(0) 'Titulo del globo
        .dwInfoFlags = tipo
        .uTimeout = 1000 'Tiempo de espera  (millisec.)
   End With
 
   Shell_NotifyIcon NIM_MODIFY, nf_IconData 'Activamos el globo
End Sub
Sub Eventos(x As Single)
Dim lMsg As Long
   Dim sFilter As String
   lMsg = x / Screen.TwipsPerPixelX
   Select Case lMsg
   'you can play with other events as I did as per your use
      Case WM_LBUTTONDOWN
      Case WM_LBUTTONUP
       'Form2.PopupMenu Form1.MnuMostrar
      Case WM_LBUTTONDBLCLK
        If frm_main.Visible = False Then
        frm_habilita.Show
        End If
      Case WM_RBUTTONDOWN
     
      Case WM_RBUTTONUP
       'Form2.PopupMenu Form2.MnuMostrar
      frm_main.PopupMenu frm_main.Archivo
      Case WM_RBUTTONDBLCLK
   End Select
End Sub

AgregarIcono "dirrecion del icono"