So my question is, what should I buy to upgrade my laptop to run all the games I want with all settings set to Max? Should I just purchase a Radeon Graphics Card? If so, which one would be good enough? Purchase more RAM? If so, how do I go about doing that? Upgrade processor? If so, which one? Anything else?
Any info on where to buy anything you all suggest I should purchase with the best pricing and reliable seller would be much appreciated as well. And please remember that I am not familiar with Computer Jargon so please keep it in laymen's terms and detailed

Here are my specs (let me know if you all need anything else and how I can get that info please)
Alienware M14X
Processor: Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz 2.00GHz
Installed memory (RAM): 4.00 GB
64-bit Operating System
Graphics Card:
(Not sure. Says this under Display adapters)
NVIDIA GeForce GT 555M
Intel(R) HD Graphics Family
Thanks a lot


Happy gaming!