I loved the Icewind Dale games, I have to say. They are probably not quite as good as Baldur's gate, but they are certainly worht a play if you've never gone there before.

Planetscape Torment is one that every time I see it's name I think, I really should play that, but haven't.

And Civ 3 swalloewee a huge part of my life and it runs easily and smoothly on my laptop, which is a couple of years older than yours.