'1方法一
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 conSwNormal = 1
Private Sub Command1_Click()
ShellExecute Me.hwnd, "open", "http://www.google.com", vbNullString, vbNullString, conSwNormal
End Sub
'2方法二
Private Sub Command1_Click()
Shell "Explorer http://www.52520.com"
End Sub