Basically it is the same process as outlined here http://www.itninja.com/software/epson/easymp-network-connection/2-6115/windows#tipsand here
http://www.itninja.com/question/epson-easy-mp-installshield-exe-file-problem. Download the setup.exe, unzip it, open command prompt, path to the
InstData folder, run "setup.exe /r", install as normal, go to the
Windows directory, copy the setup.iss file into the InstData folder, copy the License.EN (or what ever your country code is) license file from the license folder into the InstData, delete the license folder (may not be required I didn't test what would happen if it was left there) and
then install with "setup.exe /s" (you may have to use "setup.exe -s -f1 install.iss" but I did not).
Setup Type: Windows Installer (Delivered as an EXE)
Deployment Method Used: Windows Installer Command Line (No MST)