How to check if a file exists, if doesn't exists, then download it?

How to check if a file exists, if doesn't exists, then download it?

i believe it's like this.

Code:

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Option Explicit

Private Sub Command1_Click()
On Error GoTo err

Dim gifbyt() As Byte
Dim i As Integer
Dim fno As Long

Inet1.Execute "http://www.codeguru.com/forum/images/cg-logo.gif", "GET"

While Inet1.StillExecuting
    DoEvents
    'Wait for it to stop executing
Wend

If Inet1.GetHeader("Content-length") = "" Then
  MsgBox "File Not found"
Else

    gifbyt() = Me.Inet1.OpenURL("http://www.codeguru.com/forum/images/cg-logo.gif", icByteArray)
    'Ritrived the gif file as Bytes of Array
   
    'Creating an empty gif file and write the bytes in to it.
    fno = FreeFile()
    Open "c:\logo.gif" For Binary Access Write As #fno
    Put #fno, , gifbyt()
    Close #fno
    MsgBox "Downlod Complete"
 
End If


Exit Sub
err:
MsgBox err.Description

End Sub

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Oh! Thx!