[courier-users] imap folders

[Ximm]

Hello, I'm new in courier-imap.   I want to setup Postfix + Courier + IMP(horde). I've already configured Postfix + Courier IMAP, with PAM authentication (i.e. the passwd file).   Te problem is that the IMAP server only shown one folder :(INBOX). But I would that it shows also the sent mail folder and a draft folder (for uncompleted messages), and that when I send mail, the sent mails remain in the sent folder, not in the sent forlder of  the local folders. I use the Oultlook express as client.   How can I  configure this?   Tank you.