The general opinion is that the best ROM hacking tool site is Whack a Hack:
The Gba tools are stored at:
http://wahackpokemon.com/es/descarga/herramientas-gba
The NDS at:
http://wahackpokemon.com/es/descarga/herramientas-nds
and the GB-GBC:
http://wahackpokemon.com/es/descarga/herramientas-gb
But the more updated resources are at the forum:
http://wahackforo.com/forumdisplay.php?fid=16
A very good site that I've seen is pokegears.webs.com, because it has tools for GBA hacking as well as every ROM linked to up to Pokemon Emerald. It's all clean, this I can promise you.
It's in English, too!
By the way, as a general fact, EliteMap is infected with a InfoStealer. Not only does it sift through your system info and CC numbers, but it also shuts down internet use. Manually typed addresses will come in blank. Just thought you should know.
by hacking
Making a copy of a Pokemon by hacking or glitches.
without hacking, 100 with hacking, 999 and then reset to 0 and no more exp gain.
you can only get it by hacking the game
You can't without hacking.
The only cheats that will come out for it are the ones that will be released/ downloaded for the Nintendo Dsi action replay or other hacking devices
Yes, either by hacking, (such as action replay or other devices) or by breeding two Pokemon at the daycare. Although, if you do hack, you cannot trade it over wi-fi to other players.
A shiny Pokemon may appear anywhere you normally catch Pokemon, but the chances to get one are really low. You can use hacking devices to get one and even modify their stats, but I don't play like that XD
by hacking
Making a copy of a Pokemon by hacking or glitches.
try swamperttools.webs.com its a pretty good place for all generations of Pokemon ROM hacking tools
By hacking or trading
By hacking
no!
by hacking
You can't.. You had to be at a nintendo event at a certain time but they dont have them anymore.
without hacking, 100 with hacking, 999 and then reset to 0 and no more exp gain.