I recommend Thief series! Its got a great storyline and hitman like gameplay. Its got no guns because it is set in the middle ages but once you play a mission you'll start hating guns! You get a really wide variety of arrows for creativity!
Read more about it here:-*en.wikipedia.org/wiki/Thief_(series)
Oh, and the game will run if you own a decent enough PC to run Win 98 without hiccups!