What is expandable in G50VT Asus X-5?

OK so I recently got the Asus. It is a very good notebook, handles big games multitasking, etc. but the processor is a little weak and I was wondering if it is possible to update it? I do not want to overclock it t is not good at laptops. Also what else can I update on it and to what extent? for example RAM and up, Hard Drive, Video card, processor and if possible a system cooling can be better to install? I would buy a laptop from Alienware, but it is a rip off, and iBUYPOWER is not what I was looking for so I'll do it alone for cheaper. I was also wondering is a liquid cooling system could be installed. Thanks for the help.

If you notice, the G50Vt-X1 has the P8400 I think that both the X1 and X5 shares a common platform to check if this page helps, http://vip.asus.com/forum/view.aspx?id=20090401070930096&board_id=3&model=G50Vt&page = 1 & SLanguage = en, Liquid cooling sounds strange because of limitations of space your system has not been created with / for the cooling liquid, so question does not arise

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