sorry to tell u but within gameplay it isnt possible. the only way to get them is to catch them in either ruby or saphire ad migrate them to your game. having access to them will allow u to fight regigigas at the snowpoint temple hope i helped!!

You can get the regis but you need to know that the brail code the one on the wall means walk around the edge of the room touching the edges.

ya cant answer 1 is 4 ruby (not me) but ya cant just go and get on dimond or pearl.Get on ruby or saphire

you can't get them in the game diamond and pearl. First you have to defeat the elit four. Then go to palpark and mirgrate them from your pokemon saphire or pokemon ruby game to diamond.

you can't get them in the game diamond and pearl. First you have to defeat the elit four. Then go to palpark and mirgrate them from your pokemon saphire or pokemon ruby game to diamond.

Well, Did you Know yet that after the diamond and pearl game came out there are 4 Regi's including regigas. How I got mine is useing an action replay i got it from Best Buy

There are 4 regis in Diamond and pearl. Ice, Steel, Rock, gigas. You have to migrate ice,steel,and rock from ruby,saphire,OR EMERALD!( everyone forgets emerald). Get a braille tranlating thing from the internet. Have Wailord in the Back of your team and Relicanth in the front. Go throught the currents by the log city. There will be a diving area by the end that has braille writing on a stone. Do what it says and a cave will open. Go through it and complete it. Once that is done, You can catch the Regis without cheating.

well to get regigigas u need 2 migrate the regis from ruby sapphire or emerald

NOTE: You need a Relicanth and a Wailord on your team. At the sealed chamber midway between Pacifidlog and Slateport (accessible only from Pacifidlog) use Dive to enter a tunnel that leads to a slab with braille. Surface there and enter the sealed chamber. The next step is to go to the back of that room and use Dig on the space where you see braille in the back of the room to open up the next area. Go to the rear part of the second room and read the inscriptions. It says you must have a Relicanth in the lead slot and a Wailord in the last slot (of your Pokemon line-up). You will then open up the entrances to each lair.

First you have to have some Pokemon that know HM03 Surf, HM08 Dive and TMDig. Fly to Paciflog town. Go in the Pokemon Center and withdraw Wailord (evolution of waimer) and Relicanth (If you don't have these Pokemon yet catch a waimer with your super rod in the water near Mossdeap city.) They are near Lv.35 so you have to train it to Lv.40 for it to evolve. Catch Relicanth underwater to the left of Mossdeap City. He is rare so have patience. Surf left and always stay on the bottom currents. After you get to the 3rd or 4th square of land, you'll see the deep water. Dive in. Walk all the way to the top. Use Dig. Go through the door and go all the way to the top and read the words. Then press A again and all of the 3 doors (for the 3 regi's) will open. You probably already passed them before.

To find Registeel, fly to Fortree and head east out of the town (left). Head right down route 120 until you reach the lady who gives you the Wiki berry where the path now heads east again. To the left, walk up the stairs and continue up through the tall grass. In this area you will find a cave with six large rocks around it. Enter it. The braille on the far wall reads: "With new time, hope and love, aim to the sky in the middle." This means, move to the centre of the room and use fly. Once done, the braille on the wall with break into a cave. To find Regirock, fly to Mauville and make your way up north (up). Pass the family that has battles with you and pass the rocks that need rock smash used on them and at the end of the path turn right into the desert. Move towards the bottom of the desert to the cave that looks like the one before. Enter it. The braille on the back wall reads: "Right, right, down, down, then use strength." It means walk two steps to the right and then two down. Use strength with a Pokemon. The braille will now crumble away leaving a hole. Crawl through and Regirock is yours. To obtain Regice, fly to Petalburg City. Be forewarned, this one is tough to catch. Move west out of the town. Keep on going west until you reach the area below Mr Briney's. Go south (down) onto the beach and surf. Surf as far as you can to the left so you don't miss it. Surf down until you find an island with one trainer on it. Hop off and cross to the left of it. Surf again, but this time go up. You will reach a cave just like the others. This time read the braille and don't click again. It says: "Stop and wait. Wait for time to pass twice." his has to do with the history it all, but just keep the window open until it closes and yet again it reveals a hole on the wall. Crawl in and Regice will be waiting. Note: You must complete the stage with the braille in the currents before these cave are open.

Can't Need Ruby or saphire ask again and I'll tell you how

There is no possible way to catch them in pearl or diamond but you cna catch them in all the other games like sapphire etc. then migrate them to pearl or diamond

you can migrate from from some of the pokemon gameboy games or you can enter a cheat code from action replay to get the 4 regis(regice, registeel,regirock and regigigas).

You need pokemon Ruby, Sapphire or Emerald. All 3 Regis are at level 40 i used Emerald for mine. You will need the following: Pokemon that know DIG, ROCK SMASH, FLASH, SURF, and DIVE. and to have beaten the Elite 4. i THINK. Wailord (train Wailmer to level 40) Relicanth (somewhat rare, go underwater and search around in some seaweed, around Sootopolis) go to Pacifildog Town. MAKE SURE YOU HAVE THE POKEMON WITH SURF, DIVE, AND DIG. ALSO HAVE WAILORD AND RELICANTH. head left through the currents (id stay inbetween the bottom and the middle part of the currents, but its still pretty hard) when you find the place to dive, (its close to the end) dive and follow the path. when you find some dots (these dots are called "Braille") on a wall, go to them, read them (press A at them) and then dive back up go tot the other side of the room to more Braille, read it then use DIG when facing the wall. (it will ask you if u wanna return to underwater just choose yes) a hole will appear, go in the hole. go to the other side of the room you go into again, and move Wailord to the front of your party and move Relicanth to the back. then read the Braille on the rear wall again. (earthquake occurs, and 3 doors will open, a message will appear) after that happens, you can ditch wailord and relicanth and the pokemon with dig. fly to dewford. then go up to route 105. follow along the left wall using surf, you will need to go across some sandy islands. when you find them, cross them (they will be covered in trees) then go up. you will find 6 stones surrounding one big one with a hole in the middle. go into the hole. read the braille on the back wall, then go to the center of the rooom and run along the edge once clockwise (harder than it sounds). go into the next room and catch/defeat regice. get the pokemon with FLASH. fly to Fortree and go right, follow the path, cross the bridge, keep goin through the grass maze, cross the other bridge, go down, past the proffesor-lookin guy (on the left side), keep going down, when you see the berry patch on the left, go up the stairs near it, through the grass on the right, and youll see a ruin maniac, and another rock with a hole in it. go in the hole. go to the back of the room, read the braille then go to the center and use flash. defeat/catch registeel. get the pokemon with ROCK SMASH. fly to mauville. go up, past the rocks that you use rock smash on, into the desert, and go into the desert, then go allll the way to the bottom of the desert to another set of ruins. MULTIPLE TRAINERS ALONG THE WAY. YOU HAVE BEEN FORWARNED. go to the center braille, read it then go Left 2 squares, Down 2 squares and use ROCK SMASH. go in and catch/defeat Regirock. then Migrate all 3 regis to diamond/pearl/platinum. (if you want to keep them on emerald, you could clone them).

In Pokemon Diamond and Pearl, you CAN NOT get RegICE, RegiROCK, or RegiSTEEL, in the game you will have to migrate them from Sapphire/Ruby/FireRed/LeafGreen/Emerald. You can only encounter RegICE,RegiROCK,and RegiSTEEL in Pokemon Platinum version only during normal game play once you obtained the EVENT Regigigas in your country.