WHAT IS AN .EPS FILE?
An .eps stands for “encapsulated post script,” and is basically a printer file that is viewable and editable in some programs.
You may be able to view it in a current version of Adobe Reader (as if it were a .pdf file).
It’s editable in Adobe Illustrator , Freehand and Corel Draw. You can open it in Photoshop, but I’d recommend only doing that for your own use. When you open an .eps in Photoshop, it converts the file to something that is not as universally sizeable.
Any production house or print shop should have no problem dealing with the .eps if you email it or give it to them on a disc. They’ll probably thank you for giving them something that’s easy for them to use.