First, I would try using the cups browser interface. It doesn't always work, but when it does, it's quick.
Open your browser and go to
http://localhost:631. To get into the administrative section of the page, you will need an admin password. The root password always works; if you are a member of the lpadmin group, you can use your own password. Then ask cups to scan for printers. If it finds your new printer, you can enter a name and other details for it and make it the default printer.