Toby Kelsey wrote:

For the purpose of a science fiction story I was wondering what a
black-hole 'solar' system would be like for humans.

...

Toby

I don't know if you would be interested in a somewhat similar
system used by another author, but you might have a look at:
Larry Niven's The Integral Trees.
One review is can be found at:
http://www.larryniven.org/reviews/140.htm

There was als a sequal: The Smoke Ring
http://www.larryniven.org/reviews/158.htm

--
Rick

P.S. If you need to email me, you know what to do with the 'spamtrap'.
___________________________
Buzzard, beginning a dive:
"Patience my Tail Feathers!
'I Aim To Misbehave!'
I'm going to kill something."