What gaming laptop should i get?

Im looking at a new gaming laptop. Im looking for something that will be suitable for 2/3 years (ie a laptop that in 3 years time will still run most new releases even if its minimum graphics etc).

My budget is about £1000 and i dont need an OS.

Im thinking about this one (but im open to other ideas)

http://www.pcspecialist.co.uk/notebooks/vortexII-17/

with the ram increased to 16gb 1333 or 8gb 1600 (which is best)

my concern is that its a 2.2ghz laptop... arent there games already that reccomend higher? eg crysis 2 wants 2.66GHz Core 2 Duo. Would it be worth increasing to the i7 quad core 2.2ghz.

Im totally out of the hardware loop. I used to understand it when you needed a 486 or a 233mhz. but theres so many variables now!

thanks for the advice.