Entei is a 'roaming' Pokémon, which means it is not in a fixed location, it actually changes what route it's on every time you do. Therefore, encountering it is merely based on luck. If you've encountered Entei already, an icon of its face should appear on your map, showing its current location. The only way to get into a battle with him is to keep switching routes until it comes to you.
Make sure you've got something that will keep it in the battle too, as it will otherwise flee the first chance it gets. You could use a Pokémon with the move Mean Look, or the ability Shadow Tag, for example.
sorry you have to trade it to Pokemon soul silver
You can't catch charizard in Pokemon soul silver. You can get a charmander from professor oak.
you catch it in cerulean cave
you have to trade it from diamond to soul silver and you can't actually catch Roselia wild in Pokemon soul silver.
You can't catch Deoxys in soul silver
In Pokemon Soul silver or silver or gold, the legendaries you can get is Lugia, Suicune, Entai, Raikou, Mew and Mew 2
sorry you have to trade it to Pokemon soul silver
there is no cheat to get entai. you go to the burned tower, go down the ladder, then the three dog Pokemon run. you track entai and raikou with the pokegear. suicuine you will find later in the game
You can't catch charizard in Pokemon soul silver. You can get a charmander from professor oak.
Catch Pokemon
You can't catch kyogre in Pokemon soulsilver.
you catch it in cerulean cave
In johto!
snorlax
luigia ho-oh entai suicune raicou and your starter but NOT magnium
no you can, you most catch it in Pokemon emerald
you have to trade it from diamond to soul silver and you can't actually catch Roselia wild in Pokemon soul silver.