[Dovecot] per user quota

[Massimo Maioli]

Hi, i've tryed to setup per user quota with postfix/dovecot, but  
without luck.
My configuration is:

postfix 2.3.8 with virtualdomain on mysql (http://workaround.org  
tutorial)
dovecot 1.0.9

IMAP/PO3 OK
on dovecot config, i've made the changes for the quota plugin,
i've setup the gereral quota at 20MB, with this configuration:

quota = maildir:storage=20480:messages=1000

it works very well, from telnet connection and squirrelmail, i see the  
right % of quota used.

My problem is the per user quota, if i want give some user, more or  
minus space, i'm not able to do this.

I've added a quota field to the mysql that read dovecot, but i don't  
know ho to read this in dovecot-mysql.conf.

Someone can help me?

Thanks