On the bride on route 25
Go to the place where you find misty and her boyfriend
you have to find the guy that looks for siucune all the time.
Beat misty then go to cerulean cape
It attracts a ledendary pokemon.
curmen cave
evolve gastly.
this is also for heart gold
you have to use hm rock smash on rocks to find them.
You can find them by surfing and fishing.
pokemon heart gold
Well I do have the game. I did see suicune in it.
you can find information on Pokemon heart gold and soul silver on this website www.bowserrules.piczo.com