filter/redirect spam mail to user"s imap folder

Hi there,

I want to use postfix, cyrus, spamassassin+procmail to filter or
redirect incoming spam email into user's imap folder, eg. Junk.

Atm, I have setup the this using the following guideline.
http://www.goblet.net/spamkill/

in the file spamkill.rc file, I want to change it so that it can achieve
my goal. But I just realised that the spamkill.rc need to be compliant
with procmail rule.

Does anyone got another example or how to modify it so that procmail
forward incoming spam mail into user's imap folder rather than log it
into a sinal log file?

Thanks
S