3rd Gen Breeding and stuff

hey ok so I'm at pokemon league already but I kinda wanted
to breed my Venusaur (female) to get one with a better nature.

only the only daycare I know of in the leaf green is the same as the old ones
and that old guy only takes 1 of my pokemon it doesn't ask if I wanna leave
more pokemon with him.

it is possible to breed in firered/leafgreen???

is there something I have to do before I'll be allowed to breed, and if so
what is it?

Yeah..You gotta get the Rainbow Pass...The breeding center is on the fourth island.

When/ How do you get the rainbow pass???

that should be in the FAQ... go check it ^^

Yes, and any breeding questions go in the Breeders Corner. Thanks

does shiny breed in this game? like, if i have a shiny pokemon will the kids be more often shiny? or is it like ruby/sapphire where the kids are shiny at random? cuz i really want a shiny gengar on my team, but the shiny gastly i caught has a lax nautre (totaly lame for a gengar)

It's a breeding question, use the Breeders Corner :-)

And no, having a shiny parent doesn't increase the odds of the babies being shiny