You can go to the resort area to give your Pokemon a spa treatment, or you could use the soothe bell, or you could just take it around with you
No you can not have more than one login in Pokemon diamond.
The massage girl is in Veilstone. Her massages make your Pokemon more friendly, and get you Pokemon accessories! Hope this helps!!!!!!!!!
It's almost strictly by chance; check serebii.net for more info.
You can't!
They have all the Sinnoh pokemon, and some more.
I believe that Pokemon platinum is better than diamond and pearl because it offers more features, and allows you to do much more cheats and tricks and get more Pokemon through normal game play than Pokemon diamond and pearl. Yes, it is.
battle with them a lot, feed them poffins, take them for walks in amity square all those sort of things and more.
hey what you do after beating Pokemon Diamond is 1st go to snowpoint city and tlak to the sailor (make sure you've seen all 150 Pokemon) hell take you to some battle place with the battle tower and much more
It depends on the pokemon. Visit a website called serebii.net for more information.
Pokemon Platinum because you can catch more legendaries!
The diamond is a hold item that Dialga, the legendary Pokemon in Pokemon diamond, holds, making its moves stronger or do more damage.
the other ones go to the PC