Visual Basic - Como guardar una imagen de un picturebox

Hola a todos tengo un problemita con esto, tengo un picturebox con una imagen y esa imagen q esta en el picturebox la quiero guardar en un formato jpeg, encontre un ejemplo de como abrir y como guardar pero el de guardar no me da, este usa un modulo les dejo el codigo y me puedan ayudar.

Gracias

------Codigo del Modulo------
Option Explicit

Private Const OFN_HIDEREADONLY = &H4
Private Const OFN_FILEMUSTEXIST = &H1000
Private Const OFN_CREATEPROMPT = &H2000
Private Const OFN_OVERWRITEPROMPT = &H2
Private Const OFN_EXPLORER = &H80000

Private Type OPENFILENAME
lStructSize As Long
hwndOwner As Long
hInstance As Long
lpstrFilter As String
lpstrCustomFilter As String
nMaxCustFilter As Long
nFilterIndex As Long
lpstrFile As String
nMaxFile As Long
lpstrFileTitle As String
nMaxFileTitle As Long
lpstrInitialDir As String
lpstrTitle As String
flags As Long
nFileOffset As Integer
nFileExtension As Integer
lpstrDefExt As String
lCustData As Long
lpfnHook As Long
lpTemplateName As String
End Type

Private Declare Function GetOpenFileName Lib "comdlg32.dll" Alias "GetOpenFileNameA" (pOpenfilename As OPENFILENAME) As Long
Private Declare Function GetSaveFileName Lib "comdlg32.dll" Alias "GetSaveFileNameA" (pOpenfilename As OPENFILENAME) As Long

Dim ofn As OPENFILENAME

'Muestra el cuadro de dialogo para abrir archivos:
Public Function OpenFile(hwnd As Long, Filter As String, Title As String, InitDir As String, Optional Filename As String, Optional FilterIndex As Long) As String
On Local Error Resume Next

Dim ofn As OPENFILENAME
Dim a As Long

ofn.lStructSize = Len(ofn)
ofn.hwndOwner = hwnd
ofn.hInstance = App.hInstance

If VBA.Right$(Filter, 1) <> "|" Then Filter = Filter + "|"

For a = 1 To Len(Filter)
If Mid$(Filter, a, 1) = "|" Then Mid(Filter, a, 1) = Chr(0)
Next

ofn.lpstrFilter = Filter
ofn.lpstrFile = Space$(254)
ofn.nMaxFile = 255
ofn.lpstrFileTitle = Space$(254)
ofn.nMaxFileTitle = 255
ofn.lpstrInitialDir = InitDir
If Not Filename = vbNullString Then ofn.lpstrFile = Filename & Space$(254 - Len(Filename))
ofn.nFilterIndex = FilterIndex
ofn.lpstrTitle = Title
ofn.flags = OFN_HIDEREADONLY Or OFN_FILEMUSTEXIST
a = GetOpenFileName(ofn)

If a Then
OpenFile = Trim$(ofn.lpstrFile)
If VBA.Right$(VBA.Trim$(OpenFile), 1) = Chr(0) Then OpenFile = VBA.Left$(VBA.Trim$(ofn.lpstrFile), Len(VBA.Trim$(ofn.lpstrFile)) - 1)

Else
OpenFile = vbNullString

End If

End Function

'Muestra el cuadro de dialogo para guardar archivos:
Public Function SaveFile(hwnd As Long, Filter As String, Title As String, InitDir As String, Optional Filename As String, Optional FilterIndex As Long) As String
On Local Error Resume Next

Dim ofn As OPENFILENAME
Dim a As Long

ofn.lStructSize = Len(ofn)
ofn.hwndOwner = hwnd
ofn.hInstance = App.hInstance

If VBA.Right$(Filter, 1) <> "|" Then Filter = Filter + "|"

For a = 1 To Len(Filter)
If Mid(Filter, a, 1) = "|" Then Mid(Filter, a, 1) = Chr(0)
Next

ofn.lpstrFilter = Filter
ofn.lpstrFile = Space(254)
ofn.nMaxFile = 255
ofn.lpstrFileTitle = Space(254)
ofn.nMaxFileTitle = 255
ofn.lpstrInitialDir = InitDir
If Not Filename = vbNullString Then ofn.lpstrFile = Filename & Space(254 - Len(Filename))
ofn.nFilterIndex = FilterIndex
ofn.lpstrTitle = Title
ofn.flags = OFN_HIDEREADONLY Or OFN_OVERWRITEPROMPT Or OFN_CREATEPROMPT Or OFN_EXPLORER
a = GetSaveFileName(ofn)

If a Then
SaveFile = Trim$(ofn.lpstrFile)
If VBA.Right$(Trim$(SaveFile), 1) = Chr(0) Then SaveFile = VBA.Left$(Trim$(ofn.lpstrFile), Len(Trim$(ofn.lpstrFile)) - 1) & GetExtension(ofn.lpstrFilter, ofn.nFilterIndex)

Else
SaveFile = vbNullString

End If

End Function

'Extrae la extension seleccionada del filtro:
Private Function GetExtension(sfilter As String, pos As Long) As String
Dim Ext() As String

Ext = Split(sfilter, vbNullChar)

If pos = 1 And Ext(pos) <> "*.*" Then
GetExtension = "." & Replace(Ext(pos), "*.", "")
Exit Function

End If

If pos = 1 And Ext(pos) = "*.*" Then
GetExtension = vbNullString
Exit Function

End If

If InStr(Ext(pos + 1), "*.*") Then
GetExtension = vbNullString

Else
GetExtension = "." & Replace(Ext(pos + 1), "*.", "")

End If

End Function

--------------Fin del codigo del modulo----------------------

--------------Codigo del Formulario---------------------------

Dim Filename As String

Private Sub Command1_Click()
Filename = OpenFile(Me.hwnd, "Archivo de texto|*.txt|Mapa de bits|*.bmp|Todos los archivos|*.*", "Abrir documento", vbNullString)
picturebox1.picture = loadpicture (filename)
End Sub

Private Sub Command2_Click()
Filename = SaveFile(Me.hwnd, "Archivo de texto|*.txt|Mapa de bits|*.bmp", "Guardar como...", App.Path, "sin nombre", 2)
Savepicture (picturebox1.picture)
End Sub

ese es m codigo, espero y me puedan ayudar desde ya muchas gracias.