Freehand will not import an ArcMap generated EPS as an editable graphics file.
This is an incompatibility with Macromedia Freehand.
Alternative formats for importing into Freehand are Portable Document Format (PDF) and Enhanced Metafile (EMF).
Adobe Illustrator (AI) is another export format that supports Freehand. This exporter is available with Service Pack 1 for ArcGIS 8.1.