My eldest lad has passed the old rig i built him for his 8th Birthday down to his 10yr old brother.

It's a althlon xp 3700 dual core with 7600gs and now running windows 7.

My lad plays xbox etc but said he would like some older pc games.

What can this run? Call of duty and battelfield i imagine?

Any info please guys. He wants Shooters etc etc. No sports games.