[Dovecot] .INBOX required?

Hi,

Newbie to Dovecot and IMAP in general. The system in question is RH 9, Dovecot 0.99.11, Maildir, accessing mail with SquirrelMail, Thunderbird, Kmail, Mutt, Entourage and Mail.app.

I've set up the maildir for users in ~/Maildir. Inside that I have other folders, .Sent, .Drafts, .Trash, .Junk, .MakeJunk, .MakeGood.

~/Maildir itself has the cur, new, and tmp folders, but I note that there is also an .INBOX folder. Mail to the account does end up in ~/Maildir/new and it's readable in the various MUA's (as Inbox). I'm just not certain why the .INBOX is there, and if I'm supposed to be creating the other folders as .INBOX.otherfolder.

Thanks, Todd