After you beat the elite four, and champion. Go to The fossil maniac's house in Fallarbor town. Remember the door he was blocking before? Now he gives you a warning about how dangerous it is and that he left it alone cause he didn't think there were any fossils back there. Too bad for him, and GREAT for you. Go all the way to the left, its a long walk, and collect the second fossil.
As a side note, Reviving a fossil doesn't take that long, just walk out of the Devon building and go back in to pick it up.
it tells you how to unlock the regis
You can get a rigirock on Pokemon Emerald in the Desert Ruins.But you need to unlock the Rigi's though,before you can attempt this.
you cant
You can get a Rigisteel on Pokemon Emerald in the Ancient Tomb,which is on Route 120.But you need to unlock the Rigi's before you can attempt this.
By finding them in the wild, evolving, or trading... fairly simple
it's impossible
you unlock the extended part of the safari zone after beating the elite four. you can catch really good Pokemon like houndoom, tauros, teddirusa,etc.
hoenn region.
Find the key at a under water cave
watch "how to get the three regi's" on youtube
No, the only way to get them is to migrate them from R/S or Emerald.
Go to this link for all you need to know and its a great site for all Pokemon info and its not some stupid website its really good http://www.psypokes.com/emerald/legendaries.php