Oldhand,
Thank you for sharing your experience with me. Yes, as you mentioned, different people have different cases, This is why I posted my message here for help and other people's experience. It seems that not many people have similar situation as I have (no other reply to my post, except yours). Once again, thank you for your kindness, I really appreciate it. At the same time, I'm looking forward to some responses from more people who had or know similar cases. Thanks.