Misdreavus
Unown is the Pokemon that comes after Snorlax in the Sinnoh Pokedex.
Glaceon http://www.serebii.net/pokedex-dp/471.shtml
Its Phione in Pokemon Platinum, You can get it by breeding a Manaphy and a Ditto Actually; Rotom comes after Manaphy in the Platinum pokedex. Kthnx. http://pokemon.marriland.com/platinum/pokedex/list/sinnoh/ Rotom comes after manaphy in the platinum pokedex phione can be made by breeding a manaphy and a ditto but he's actuelly not in the platinum pokedex :D
Unown is the Pokemon that comes after Snorlax in the Sinnoh Pokedex.
In the National Pokedex, where Weavile is number 461, Magnezone is after Weavile. In the Sinnoh Pokedex, where Weavile is number 145, Uxie is after.
Finneon.
Go to professor Rowan's place in Sandgem town and talk to him. Then Professor Oak comes and gives you the national pokedex.
Once you have seen every Pokemon in the Sinnoh region go to sandgem and talk to the professer-he gives it to you and professer oak comes along and updates your pokedex into a national pokedex
You go to Prof. Rowan's lab in Sandgem town and talk to him. Their should be a cut scene where Prof. Oak comes and you should get the national pokedex.
well usually Pokemon that are in your pokedex are Pokemon that you have seen in the wild or in battle with another trainer/gym leader/ childhood friend. There are 493 Pokemon up to date. Once the 6th generation (5th Gen. is Sinnoh.) of Pokemon comes out (Pokemon Black and White) there will be more Pokemon.
i don't know the complete pokedex, so you basically start in twinleaf town and make a journey around the region and catch, battle, and work with Pokemon. when you have seen all the Pokemon the region has to offer, you go to prof. rowan and talk to him. then prof. oak comes and upgrades your pokedex to national mode. that is all i know.
Darkrai