Hard to recommend games for someone who doesnt have an open mind
Richard Dawkins - It's good to have an open mind, but not so open that your head falls of.
I don't know what games to recommend to your specification OP, it seems like you need an upgrade of hardware to be honest if you want to play some newer games. I was going to suggest Need For Speed World, it's a free roam racing game as well, it's a massive online player. It's just that you'd certainly need to upgrade your current system.