Decided to go complete laptop and sell my old acer M5640 pc as a whole. Details with indicative price as below (don't really know what's the price now after long time):
Chip: intel E4500 @ 2.2g (never OC before) with default hsf - $50
MB: Gigabyte GA-945GCM(X)-S2- $30
Ram: Kingston 2x1gb (should be 733 or 667) - $25
VGA: Built in
HDD: WD Green 500g (still have warranty) + samsung 160g - $50
Wireless PCI lan card: Realtek RTL8185 with antena - $15
Case: Acer typical one with card reader and other front panels - $50
DVD writer: - $10
Genuine Windows Vista home premium - Free (DVD lost by sticker intact)
Part by part is around $235++ but i am selling at BNP: $200. 1wk personal warranty. It's working perfectly and quietly.
Deal at admiralty area; delivery can be considered in north area for those buying whole systems.