How To Set Printing Password Using CUPS

[David]

Hi there,

Using CUPS 1.4.4 under Ubuntu 10.10 and I had managed to setup remote 
printer over the network using dnssd protocol as following:

dnssd://DocuCentre-II%20C3000%20%20(38%3Affffffca%3Afffffff0)._printer._tcp.local/

But I couldn't find any place to input or option to specify the priting 
username and password.

I tried using dnssd://username:password@Docu... but not working.

Thanks,
David