http://www.intrepid.com/~robertl/poker1.html
I don't know of anyone has seen this. You can input the cards you
have, it'll tell you which ones to hold and the expected payout for
JoB, DW, and JW. You can change the paytables.
It's done in Java with a few applets so it might be a bit slow to
download on a dial-up connection. I don't know if the math is
correct - still it is interesting and might come in handy for a quick
reference.