With out vertical stabilizers of some sort? I understand it is flown completely by flight computers, but doesn't a plane need vertical stabilization of some sort to maintain a straight path?

It has spoilers, which create drag, to keep it strait. They also control yaw, like a rudder. The computers are a very large part of the flight controls, but think about the guys in the 40's flying them with no help at all. Must have been one hell of a hand full.

There was a B 2 bomber that not only had a rudder, but had two of them......

I don't know for sure, but they might have some kind of split spoilerelevon system for control.

masae is right, they do have split spoilerons at the wing tips to control yaw.

Here is a pretty good link with pics.
[link=http://www.richard-seaman.com/Aircraft/AirShows/Edwards2005/B2/index.html]http://www.richard-seaman.com/Aircraft/AirShows/Edwards2005/B2/index.html[/link]

The drag-rudders on the B-2 really increase its visibility at distance.
When they're retracted the plane is very difficult to see when it's low at eye level.. Opened, it's easy to see.

It also increases its radar signature. I've heard that it also varies the thrust of the engines for yawing when on a stealth mission.

Very carefully.
You would too if your plane cost as much as a carrier.

Thanks for helping me understand that guys!

Mike.

The drag rudders were used on the N-9s...
http://www.mucheswarbirds.com/N9MB.html