To modify an EPS vector file, you need a vector-editing program. Windows does not include a native vector-editing program, but there are trial versions available for free online.

An .EPS is a special digital image format that stands for "encapsulated postscript." Only specific graphics software, such as Photoshop, Photoshop Elements or Illustrator, can open and edit this file.

I have a lot of EPS files that have been created by different programs, primarily Illustrator and Photoshop. On the Mac, the creator code tells the OS which program to open the file with, but in ...