Authentication Problem on a Network Printer

[KJ Lin]

Dear All,

   Our office has a network printer (Konica Minolta bizhub C250) installed.
It has an authentication setting that allows only print jobs with the
username "Public" to work.

   All computers in our office use Windows XP and Vista, and the account name
for each computer is also set to "Public". So we can do the printing jobs very
well.

   Now I install a new computer running Linux (CentOS 5.5). All printing
configurations are done well. But when a print job is sent to the printer,
it is deleted by the printer since the username is "PRINT", not the acceptable
"Public". Even if I create and log in an account name "Public", the print
job's username is still "PRINT".

   How can I configure CUPS to let print job's username to be "Public"?

Thanks

KJ