first you need to surf to sky pillar on route 131. then you will need to navigate through the pillar's 50 floors and raquaza will be at the top
see http://bulbapedia.bulbagarden.net/wiki/Sky_Pillar for more info
Rayquaza
You can't get Rayquaza in Ruby or Sapphire unless you trade it. you can, if you know the cloning glitch for Emerald, clone your Rayquaza and trade one to your Ruby Version.
Trade it from Ruby, Sapphire or Emerald version.
No, Rayquaza cannot evolve in Ruby, or any other version.
No. It needs to be traded from ruby/sapphire/emerald
go to the top of sky pillar and you will find him
Ruby: groudon/rayquaza Sapphire:kygore/rayquaza dont know about the others
migrate from emerald , ruby or the othertrade it on the global trade station
You can't get Kyogre in Pokemon Ruby but you can get Kyogre in Pokemon emerald and sapphire and in ruby you only get groudon and rayquaza. In sapphire you get Kyogre and rayquaza and in emerald you can get groudon, Kyogre, and Rayquaza.
RAYQUAZA
Rayquaza isn't in Indigo. Rayquaza is ony in Pokemon Ruby, Sapphire, and Emerald.
latios rayquaza latias (if u have the eon ticket from live Pokemon events) and groudon