IMAP Folders

I have successfully installed Zimbra and migrated 2 domains to it from Google Apps. Mail accounts are accessible and able to send/receive mail. So I went about the task of organising my biggest email account on the webmail client - adding a whole bunch of new folders and filters to sort out my 17k messages inbox - took a long time as you can imagine. I then setup outlook on my laptop and I am able to connect to the account, send and receive messages but none of the folders (or the emails in them) that I setup are subscribed. How do I sync all the folders I setup in the webmail client with Outlook?

Thanks.