On the pc in the pokecentre, if you select a pokemon, then there will be an option to set it free,
you have your battle mode set to "set"
You cannot catch bulbasaur in diamond and pearl. If you have firered or leafgreen can set 6 Pokemon free in pal park and catch them there.
Pokemon Diamond and Pearl both have set of Pokemon that they catch. For example Diamond gets stunkey and pearl gets glameow.
you cant
btjunkie.org
You can get one in hearthome city.
The entirety of Pokemon Pearl and Diamond is set in the Sinnoh region. There is no way to revisit any of the other Pokemon world regions.
the time on your ds in the nighttime set
there is no missingo in diamond or pearl as these games were made to be free of that glitch
yes
To get free berries on Pokemon Pearl, you pick berries you find around the region, plant them, and then pick them again when they are finished growing. With these, you can start the cycle again.
You can't get Misdreavus in Pokemon Platinum, you have to trade it through Wi-Fi or get it from someone who has Pokemon Pearl. If Pokemon Pearl can't be found, go to McDonald's as they have free Wi-Fi.