You can upload coins and items from the DS game to your online account.

First you'll need a Wi-Fi connection on your DS.

If you have Herbert's Revenge:

• Tap 'Account'
• Then tap 'Connect to Nintendo Wi-Fi Connection'
• Tap 'Upload Coins'
• Any items you earned by completing missions will be uploaded to your online account at the same time
• The maximum number of coins you can upload per day is 2,000. 

 
If you have Elite Penguin Force:

• Select 'Upload/Download' from the main menu
• Connect to Nintendo Wi-Fi Connection
• Enter your Club Penguin login information
• Select 'Upload Coins'
• Tap the + to the amount of coins you'd like to upload
• Tap 'Okay' to upload