Hey when I first started the hobby, I took my very first wedding shoot (Stand in for a photographer that did not turn up ) with a Canon G1 and a 420EX. Knowing the limitation of the camera, I really anticipated alot of shots, and in the end, I received lots a encouraging comments that brought me deeper into the black hole.
Well, I do have people questioning me why I use such a camera for such an important event. But I guess after the event and seeing the shots taken in the day during the dinner, most of the guest did not ask me that question again. .
So why not D70 if even a Canon G1 can also do the job.