A.I. fun

im looking for one of those chat A.I.s, what i am looking for is one tha i can download, it runs on windows xp, i can teach it to talk by haveing it read txt files, and it can run more than one personality.

i know there is one floating around that can do that, i use to have one but the computer that it is on is dead, it was fried by a storm about 4 months ago. anyone want to help me find it?

And then, and only then, you will have a friend.