[ubuntu] How to add Network Printer connected via router?

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http://ubuntuforums.org – Hi, We have 3 computers with windows xp installed and two canon ir2200-ir3300 printer all connected through a router box. Each computer and each printer has ip addresses. It was configured like tcp ip enabled printer inside the local printer option. Each windows system can see both printer with ip and can select them to print. Now we want to try ubuntu in one of the system. Couldn't detect the printer inside the ubuntu. We have downloaded linux driver for the printer from the canon site. but found no documentation, so we tried to install it by typing ./setup in the folder and it started to (HowTos)