Bueno, aca les dejo una mini clase para crear progressbars con API, es realmente simple pero viene bien cuando no queres incluir una referencia a los controles de VB por una simple barra de progreso.

 
'---------------------------------------------------------------------------------------
' Module      : cProgBar
' DateTime    : 28/07/2008 09:23
' Author      : Cobein
' Mail        : cobein27@hotmail.com
' WebPage     : http://cobein27.googlepages.com/vb6
' Purpose     : Mini ProgressBar class
' Usage       : At your own risk
' Requirements: None
' Distribution: You can freely use this code in your own
'               applications, but you may not reproduce
'               or publish this code on any web site,
'               online service, or distribute as source
'               on any media without express permission.
'
' History     : 28/07/2008 First Cut....................................................
'---------------------------------------------------------------------------------------
Option Explicit
 
Private Const PROGRESS_CLASSA   As String = "msctls_progress32"
 
Private Const WS_VISIBLE        As Long = &H10000000
Private Const WS_CHILD          As Long = &H40000000
 
Private Const WM_USER           As Long = &H400
Private Const PBM_SETPOS        As Long = (WM_USER + 2)
Private Const PBS_SMOOTH        As Long = &H1
Private Const PBS_VERTICAL      As Long = &H4
 
Private Declare Function CreateWindowEx Lib "user32" Alias "CreateWindowExA" (ByVal dwExStyle As Long, ByVal lpClassName As String, ByVal lpWindowName As String, ByVal dwStyle As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hWndParent As Long, ByVal hMenu As Long, ByVal hInstance As Long, lpParam As Any) As Long
Private Declare Function DestroyWindow Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
 
Private c_lhWnd As Long
Private c_lVal  As Long
 
Public Function CreateProgBar( _
       ByVal lhWndOwner As Long, _
       ByVal Left As Long, _
       ByVal Top As Long, _
       ByVal Width As Long, _
       ByVal Heght As Long, _
       Optional ByVal bHorizontal As Boolean = True, _
       Optional ByVal bSmooth As Boolean = False) As Boolean
 
    Dim lFlag As Long
 
    lFlag = WS_CHILD Or WS_VISIBLE
    If Not bHorizontal Then lFlag = lFlag Or PBS_VERTICAL
    If bSmooth Then lFlag = lFlag Or PBS_SMOOTH
 
    If Not c_lhWnd = 0 Then Class_Terminate
 
    c_lhWnd = CreateWindowEx(0, PROGRESS_CLASSA, vbNullString, _
       lFlag, Left, Top, Width, Heght, _
       lhWndOwner, vbNull, App.hInstance, ByVal 0&)
 
    CreateProgBar = Not (c_lhWnd = 0)
End Function
 
Public Property Let Value(ByVal lVal As Long)
    If Not c_lhWnd = 0 Then
        c_lVal = lVal
        Call SendMessage(c_lhWnd, PBM_SETPOS, ByVal lVal, ByVal 0&)
    End If
End Property
 
Public Property Get Value() As Long
    Value = c_lVal
End Property
 
Private Sub Class_Initialize()
    '
End Sub
 
Private Sub Class_Terminate()
    If Not c_lhWnd = 0 Then
        Call DestroyWindow(c_lhWnd)
        c_lhWnd = 0
    End If
End Sub
 

Hola,bastante sencilla pero buena 

.

bue...aprende lo que es una clase primero y despues vemos...