Sending virtual gifts is easy! Just right click on your Pal's name in the Pal List on the left side of the main window and select 'send a virtual gift'.
You can also send virtual gifts to anyone in a chat room the same way. Just right click on their name on the right side of the chat room window and select 'send a virtual gift'.
The virtual gift store will open and you can select and send your gift from there. You can also purchase credits if you need them.