Samba Printing Problems

[Jonathan Younker]

Hi all,
I've been trying to set up a PDF converter (as seen at 
http://www.linuxgazette.com/issue72/bright.html), which uses Samba and 
Ghostscript to 'print to PDF.'  Everything set up fine, and my conversion 
script works fine, but I can't print though the Samba printer from 
Win2kPro.  Nothing is coming up in the log files, but the file isn't 
getting sent to the server, either.  When I check the Win Printer Status, 
the title bar reads "access denied, unable to connect.'
Here's my smb.conf:

[global]
    netbios name = Iris
    workgroup = Library
    server string = IRIS
    security = user
    log file = /var/log/samba-log.%m
    lock directory = /var/lock/samba
    share modes = yes
    encrypt passwords = yes
    smb passwd file = /etc/smbpasswd
    hosts allow = 139.57.128.116
    invalid users = root samba
    domain master = no
    local master = no
    preferred master = no
    os level = 10

[shr]
    path = /shr
    browseable = yes
    writeable = yes
    guest ok = yes
    force user = nobody

[pdf]
    path = /tmp
    printable = yes
    guest ok = yes
    use client driver = yes
    print command = /usr/bin/printpdf %s
    lpq command =
    lprm command =

Any ideas?
Thanks,
Jonathan Younker