|If the printer also supports wired network, connect the printer to the router,by using a lan cable.|
If the printer supports only wireless network, you have to create an Ad-Hoc wireless network.
Therefore, you first have to disconnect the lan cable of your computer, then install the software for your printer. After that, you can replug the lan cable to your computer.
This all should be described in the printers manual or, if you haven't got a manual, go to http://www.epson.com, click on Drivers and Support, and download the manual for your printer.
Then follow the instructions in the manual.
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