You are right.. I also worried about that problem..
but I just wanted to do it somehow.. knowing that later on I will encounter problems.
I really wanted to figure this out.. ~_~

Anyhow.. I'm very happy to find pros here~~
I learned a LOT just in one day..
I'll definetley share my knowledge with people in here too!

ps
I'm computer technician.. not really good with developing applications
But I changed my mind.. cuz I didn't want to stay in service level
but higher hiearchy.