You might find this article to be of some use
http://www.space.com/scienceastronomy/blackhole_travel_030404.html
I also recommend Kip Thorne's book on black holes.
Space/Science » in reply to A question
http://www.space.com/scienceastronomy/blackhole_travel_030404.html
I also recommend Kip Thorne's book on black holes.