On the old Mac laptops there’s something on there that allows you to type something in and it will say it in a monotone voice. Is it possible to take that and put it on my HP NX7400 laptop?

the main computer in the house has two laptops running off a Belkin G router via network cards,we have just bought another computer for my daughters bedroom how do i connect this to the other computer without disturbing the settings on the router it doesnt have a network card slot hope you can help thanks