Epson UK Support for your model. Information from the download link (right) seerms to indicate that the drivers may already be with the OS, but maybe not. Microsoft is correct - you get support from the manufacturerer of the computer who installed the OEM Vista, and it may have left out the drivers for the printer.
I'm not computer-wise, but I'm not an idiot either. I replaced a Windows 98 computer with a new Lenovo 3000J machine. According to the the machine instructions, Epson, and Microsoft, this machine had all the software needed to run my Epson Color Stylus 440 printer. I followed all the directions. The computer said that my printer had been installed and was my default printer. But, when I tried to print anything, including a test page, nothing happened. I contacted IBM and was told that the printer was not compatible. I asked for a supervisor and he walked me through and the printer worked fine after that, for about a week. Then, it stopped again. I called IBM and was told by several tech people and two supervisors that the fault was in the Vista system and they couldn't help. I contacted Epson and they said that Lenovo has all the software needed for my printer. Then I contacted Microsoft. They were worthless. They said that, since IBM had purchased the system, it was their problem, but, for $60, they would give me help. Nice of them! I even put the machine back to factory defaults, but the printer still won't print. When I try, it indicates "printing", then "error". Now, I have an all but useless system. I'm sorry that I didn't keep my old Windows 98 system. Can anyone help? There must be an answer, because it did work.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic