What do I need to play ?

My OS is vista home premium 32 bit , 2GB Ram, 120 GB Hard Drive, Dual
Layer 8x DVD Burner. I'm considering to buy some pc games, particularly
Windows DVD games such as Crysis, Modern Warfare , Flight Sim. etc.
Being my first time for pc games, I'm not sure if my laptop has got
enough to play those games. I heard that it depends on my video card(?)
or my graphic card(?), and I have no idea where and how to look that
infos up. I have 65.3 GB left on C: , and 9.35 GB left on my D: drive.
Please explain to me what I need, if any , so I can upgrade my system
for the games. ALSO, please recommend a controller best for the games.
I'd like to use it as close as I did on my PS2( I know it's not the
same, and I'll still have to use the keyboard.) Thank you.


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davidjchuang