The deed was done yesterday, I finally upgrade the computer. I went to Pantip Plaza with my younger brother who offer to accompany me, since he wants to go to Acer service center at Pantip with fix his office's notebook.
The upgrade was done but I must make one thing clear. I Love FireFox to death, but I hate how I have to reinstall every Themes and Add-ons, every Friggin' times I reinstall XP.
And don't get me started on the drivers and games and so on... But... after all said and done, I do like the faster machine and Overlord play very smoothly now. I am looking forward to really putting it through it's pace once I regain my stamina