you cant
Do you have a flashcart? Is the save file .sav then you can use pokesav! Google "Pokemon Pearl Pokesav"
You can get rotom from Pokemon diamond, pearl & platinum, or if you have an action replay, pokesav it or wild modify it.
Pokesav is a downloadable cheat engine that works on platinum,diamond and pearl (But you need action replay)
there is none the only way you can get them is by using pokesav go to google and type pokesav once your on it you can teach yourself or you can go to youtube and watch a tutorial
you cannot make your own action replay codes for that game you only can make codes in Pokemon pearl or diamond with the pokesav
If you mean how to get the other starters other than the one you chose, the only ways are: 1. Trade (link or GTS) 2. Hack with PokeSav, or Action Replay If you mean how to use ledgendaries as starters, 1. Hack with Action Replay or PokeSav
Download the program called Pokesav, just search it in goodle and download it, it's very easy
ANSWER:www.supercheats.comsearch for Pokemon Pearl for the Action Replay and you'll eventually find it.
Pokemon pearl ds card is smaller then a action replay
they have made a code creator it is called ar tools and kit or something like that or if u have Pokemon diamond or pearl look for pokesav
action replay or event
go to www.youtube .com and search Pokemon pearl action replay codes