april1st to april30th
You must get it from an event that has already expired. If you missed the event, you can get the mystery gift event card from someone got yellow forest, and kept the card.
The Yellow Forest event starts on Wi-Fi April 1 (Today) all the way to May 5th
April 1st-may 5th
It comes out on April first and ends at the end of April.
its a WiFi event
The only way is the event pokewalker route, yellow forest.
the only way is to get it from an event pokewalker route. when you are in the event, go to the yellow forest and you will find the light ball there.
You had to use your WFC to get it but the event for it was over as of May 5th, 2010 in the USA
in the yellow forest
There is no such thing as a Yellow Forest.
you cant it only obtianed by a wifi event
No, you cannot get Pikachu in Ilex Forest however you can find it in the Viridian Forest but there is a 5%-6% chance of encountering it, additionally you would have the option of trying to trade for it from Pokémon Diamond, Pearl or Platinum and you would be able to encounter it in the Pokéwalker through the Resort, Yellow Forest, Rally or Sightseeing courses and then transfer it over to HeartGold or SoulSilver however Yellow Forest, Rally and Sightseeing were event-only courses and Yellow Forest was the only event-only course that was distributed among the three of them.