Sorry that I don't have a solution for your problem but I got your post from a search for a solution to mine :-(
Here is my /etc/cups/printers.conf
# Printer configuration file for CUPS v1.1.23
# Written by cupsd on Sat 26 Nov 2005 02:51:17 PM WET
Info HP DeskJet 1120C
JobSheets none none
Now, I can print any test page that I want from http://localhost:631
but when I try to print from an application such as OpenOffice or mousepad or gimp... it doesn't work at all!
But I noticed that these appeared in Print Jobs!
I'm having a little bit more difficulties since I'm using Ubuntu with Xfce and no Gnome or KDE, only Xfce 4.2 and Xfprint doesn't help me at all since my printer appears correctly listed and it is, in fact, properly installed.
Any ideas? Thanks in advance