How can I connect to wireless printer Epson XP-225?

I'm trying to set up a Wi-Fi printer Epson XP-225. I've gone to system settings (unity-control-center), selected "Printers", then "Add" and then "Network Printer". I don't see the printer listed there and when I select "Find Network Printer", I am asked to enter the host, but I have no idea what to enter here.

I have installed the Linux driver provided by Epson (http://download.ebz.epson.net/dsc/du/02/DriverDownloadInfo.do?LG2=EN&CN2=&DSCMI=43353&DSCCHK=9f26e5cbd41612f9e38f91537c63c82d18c401e9).

What should I do? I'm quite lost.

A printer that attaches wirelessly is given an IP address by the router. Check your own Ubuntu machine from the terminal:

ifconfig

You will see the IP address your own computer has on the network. It may be, as an example, 192.168.0.15. Likewise, your printer has a different IP address of its own. You can find the address by pressing the 'network status' button on the printer. This is explained on page 14 here: http://content.etilize.com/User-Manual/1028142396.pdf

A network status page will be printed that will give you, among other things, the needed IP address.

Then add a network printer as before and use the Device URI of: ipp://192.168.0.11:631/lpr but substitute the IP address you found from the printer for my example 192.168.0.11. The port number, 631, needs to be specified as that is the port number that the CUPS printing system uses.

Then you can go forward with the configuration, select the make, model and driver and print a test page.