[ogf-d20-l] I have been lurking and need a question answered.

[Chad Boyer]

Like many here, I envision making a d20 product.
I was hoping to revise a game called Living Steel made by
Leading Edge Games.  (my reason is that the one complaint against
the game is that it used Phoenix command rules where you had to have
a degree in advanced theoretical mathematics to figure out a hit or not)
My problem is that Leading Edge Games has disappeared.
So I have a couple of questions.
1) How does one get in touch with publishers that no longer publish?
2) How long does copyright last?
3) Is it copyright infringement if I don't gain any money on the product.
i.e. do
the conversion and just post it on the net?

Thanks
Chad Boyer
aka CylentWolf