Can I specify a spool file to read from?

[Shane Holder <holder@mailhost.rsn.hp.com>]

I use procmail to split mail into spool files, and I've got an nnml
mail group for each file.  I would like to reconfigure procmail with
no final rule so procmail delivers mail to my $MAIL spool file, as
well as continue spooling specific articles to my spool directory.

How can I set up a nnml group that reads mail from a spool file that I
specify.  I tried doing something like:

 (nnmail-spool-file "/usr/mail/holder") 

in the group parameters, but a M-g didn't touch the spool file.

Thanks,
Shane

-- 
Shane Holder                                 e-mail: holder@rsn.hp.com
Hewlett Packard                               phone:     (214)497-4182
3000 Waterview                      Ignorance isn't so bad, as long as
Richardson, TX 75083                it's not accompanied by stupidity.