#1: Go to: www.epson.com
#2: Select country ---->
#3: Click on: Drivers & Support --->
#4: Click on: Printers --->
#5: Click on: Inkjet ---> (or other applicable printer type)
#6: Select your printer model --->
#7: Select "Drivers & Downloads" (or just click the Windows link)
If your model is not listed then this model probably isn't supported in the selected OS or isn't sold or supported in that country, try another country at step #2. And again, there may be no drivers for Windows 7 x64.
Note: Epson website design prevents direct linking to a driver file.