open folder ?

How do i make a buutton open a folder like launch a folder in a specific directory ?

VB Code:

Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
Const SW_SHOWNORMAL = 1
Private Sub Form_Load()
    'KPD-Team 1998
    'URL: [url]http://www.allapi.net/[/url]
    'E-Mail: [email][email protected][/email]
    'Send an E-Mail to the KPD-Team
    ShellExecute Me.hwnd, vbNullString, "C:\Windows", vbNullString, "C:\", SW_SHOWNORMAL
End Sub

edited slightly from the ALLAPI example