This requires windows 2000 or higher. Code in a userform module:
CODE
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _ (ByVal lpClassName As String, ByVal lpWindowName As String) As Long Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" _ (ByVal hWnd As Long, ByVal nIndex As Long) As Long Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" _ (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long Private Declare Function SetLayeredWindowAttributes Lib "user32" _ (ByVal hWnd As Long, ByVal crey As Byte, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long Private Const GWL_EXSTYLE = (-20) Private Const WS_EX_LAYERED = &H80000 Private Const LWA_ALPHA = &H2& Public hWnd As Long Private Sub UserForm_Initialize() Dim bytOpacity As Byte bytOpacity = 192 ' variable keeping opacity setting hWnd = FindWindow("ThunderDFrame", Me.Caption) Call SetWindowLong(Me.hWnd, GWL_EXSTYLE, GetWindowLong(Me.hWnd, GWL_EXSTYLE) Or WS_EX_LAYERED) Call SetLayeredWindowAttributes(Me.hWnd, 0, bytOpacity, LWA_ALPHA) End Sub