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 Const SW_SHOWNORMAL = 1
Private Sub Command1_Click()
ShellExecute 0&, vbNullString, "http://foros.solocodigo.com", vbNullString, "C:\Archivos de Programas\Mozilla Firefox\firefox.exe", SW_SHOWNORMAL
End Sub