Yes there is Naruto-arena
Naruto Arena
no
abp
Feral Heart :D
Horse Isle and Horse Isle 2 are fun.
Crystal Saga.
I don't know any that you can download to your PC, but check out this website:http://www.gameogre.com/onlinerpgs.htm
The top rated free MMORPGS include Runes of Magic and Vindictus. The most popular MMORPGS of all time include World of Warcraft and Lord of the Rings Online.
There is World of Warcraft, but that can be a really expensive thing to make a hobby.
Most mmorpgs that are any good have already updated their clients for the game. You just need to go to the site. And look on their forums and they should have how to download and operate on vista. Some good games are listed here: onmmorpg.
I don't think there is. You could look around though.
There is naruto pedia and naruto arena