Things You'll Need
Instructions
Open a Web browser and create a Trainer Club account on Pokemon.com.
Go to Pokemon-GL.com and sign in with your Trainer Club account.
Go to your DS and open the main menu on Pokemon Black/White. Scroll down the menu and select "Game Sync Settings."
Select "Yes" when asked if you wish to connect to the Nintendo WFC, then wait for the games to sync. After a few minutes, the screen will display your Game Sync ID number.
Enter the Game Sync ID into the Pokemon-GL box in your web browser, then return to your DS. Tap the "Online" option in your C-gear displayed in the lower screen.
Tap "Game Sync" followed by "Nintendo WFC."
Select the Pokemon you wish to send into the Dream World, then return to your Web browser.
Click the "Dream World" button at the bottom of the Pokemon-GL.com page.