Looking for a £300-£400 to play Combat Arms

So I have been looking for a laptop around £300 to 400 which can run Combat Arms smoothly, the website of the game says that it is recommended that your PC has the following: Windows XP SP3, Pentium 4 - 2.4GHz+, 1GB RAM, GeForce FX 5600 or better and 6GB HDD. I have found a laptop called Toshiba C855 which has: 6GB RAM, 750GB HDD, Intel Pentium dual core B950 processor, 2.10GHz processor speed, 5.3 hours of battery life, 1366 x 768 pixels and shared graphics. Will this be a 'good enough' laptop to run Combat Arms without lag? P.S I have been playing Combat Arms in the past year on an IBM Thinkpad which has been lagging nonstop and I'm getting sick of it

Worst case senario:

it might be slightly better if the CPU uses the 4000, but yes, it can run combat arms apparently.

Thats about it though.