Getting Parent & Child Window

ok, I had a similar previous post, but this is a little more specific. I'm wanting to be able to drag a file that is in my listview box in my program to the winamp playlist window list. Soooo, could someone at least tell me if I'm on the right track. In order to do this, don't I need to use the GetParent API function to get the winamp parent window, and then use Something like
Findchildbyclass% to find the Playlist window, since it is a child of the main winamp window. How do I go about finding the winamp window? Will it have a label or something. Any help is greatly appreciated. Thanks

- Jeremy

'in a form

Private Sub Form_Load()

Dim winampvx As Long
winampvx = FindWindow("winamp v1.x", vbNullString)

If winampvx = False Then MsgBox "WinAmp Isn't Running"

End Sub

'in a module

Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long