download and install epson stylus photo 1400 setup software in your computer.
Follow the onscreen instructions to install the software.
In the select your connection window, select wireless connection.
Select, setup printer for the first time and click on next.
Click on Wi-Fi auto connect and click on next.
Follow the onscreen instructions and your epson stylus photo 1400 printer will automatically gets connected to your computer through wireless network.
If not, then in the opening screen, click on next.
To fill in your SSID and the network password, click on show network password in the computer connected to the same wireless network.
Then go to the home screen.
Go to Wi-Fi setup and click OK.
In the Wi-Fi setup wizard, give your SSID and password and click on OK.
Follow the onscreen instructions to connect your printer to the wireless network.