I'm sorry, but there is never cheats for games on ds. But if you have ANY other questions about video games, especially sims, I am happy to help.
yes there are lots
no
you can get cheats on almost any Nintendo game with an action replay they may be found at gamestops.
No there aren't any.
No but there's glitches.
You can't.
Yes, here they are: http://www.cheatcc.com/wii/gtproseriescheatscodes.html
Yes if you have a chip for your Nintendo DS there is all you have to do is click on it and put your cheats on so you can have for example Rob or Dry Bones. You can also unlock places with your cheats too.
There are, but its much more fun just to play properly. Although, I do love cheats.
you have to do any Nintendo event where you get the Pokemon, and trade and catch for the rest.
go on cheatcc.com they have a lot of cheats i have a dsi i havent found any cheats yet so it might be hard to find some but you can find out cheats for the dsi games just google it i found so many
"Nintendogs" on the Nintendo DS is the best for portable systems, and if you're looking for a better one for the computer, check out Dogz 5.