Well I have tried to get this driver unzipped without any success and phoned Acer today to ask for advice. I was told that all I needed to unzip the file was to double click on the file. I suggested that I needed an unzip function on my netbook, which didn't appear to be there only to be assured that all I needed was to double click and also that the file should have the .sh extension. It doesn't, so I was told to get back to Epson for advice as it must be a windows driver, it is definitely for Linux, I used your first link where all epson printers were listed for Linux drivers.
The message I found on trying another download was
You have chosen to open epson 31411eu.zip from ftp://download.epson-europe.com
What should Firefox do with this file?
Open with Xarchiver(default) (already selected and I used this option)
Save to disc (unselected)
Do this automatically for files like this from now on (not selected)
I looked at the second link for Linux that you gave me which had the two lines of code for the zip and unzip instructions, this looked straightforward but I do not think I will be able to get at the innards of this Linux netbook as it has already been configured with 4 separate panes with icons presumably to make Linux Linpus more acceptable to windows users, however, I do not know how to get around them.
The driver, by the way, is saved with the printer icon so at least that bit makes sense, it is not in the downloads file, where I assumed it would have been.
I feel a bit lost with Linux just now, however, I am old enough to remember how lost I also used to feel when struggling to learn windows.
Any ideas would be much appreciated.