[Dovecot] mail location questions

Hi all,

I'm reading the docs and confs and it's not quite sinking in, mostly cuz I've been reading IMAP docs for a week now trying to find one that I want. :)

I have a mail server that will have about 800 webmail users without actual home directories. Can I set up the IMAP dir in another location, like /var/imap, where everyone can read/store their mail? Or just use the /var/spool/mail/<user> mbox file and make a sub dir for the indexing files?

Sorry if this is basic, all I saw was ~/Maildir locs. :P

Thanks!

-- C