How can I configure printer cannon ir105 in lan network

It helps if you know what your settings have to be first. They will be unique to your network.

You can also Google up the documentation for the printer or get it from cannon's website.

If the printer has an ethernet connection this is pretty easy. If not you have to connect it to a PC and share it on the network.

http://www.microsoft.com/windowsxp/using/networking/expert/honeycutt_july2.mspx

The cannon IR105 cannot be used as a printer in a standard configuration. You have to buy several options: Printer-Kit, PCL-Kit, Network-Kit.
But I'am sure if you have such a big machine you also have a service contract. Your reseller will advice for free!