关于键盘全局钩子的问题

Public Function MyKBHook(ByVal ncode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If ncode = 0 Then
 If wParam = WM_KEYDOWN Then
CopyMemory mymsg, ByVal lParam, Len(mymsg)
If mymsg.vKey = 96 Then MsgBox ""
 End If
 End If
MyKBHook = CallNextHookEx(hHook, ncode, wParam, lParam)
End Function

以上代码可实现当按下小键盘上0这个数字键后 跳出msgbox。现在请问各位老师，如果我要要求按下一个组合键，比如alt+0才出现msgbox，If mymsg.vKey = 96 Then MsgBox ""这句代码该怎么写？

http://download.csdn.net/detail/veron_04/1899084