sveta,
It seems that Graham is already trying to help you with the quality of
the bitmap preview, whereas maybe you still need to realize what the
situation is: most versions of Word cannot render EPS files. They just
get placed and, when printer to a PostScript printer, passed through
to the printer. To overcome this limitation and give you some idea of
what you're working with, EPS files can contain a (bitmap) preview
which aplications like Word can use to display on screen. Quality of
such a preview is typically low, since PostScript printing is the most
important concern.
There are several flavors of previews, so you can play around with
that to imrpove your viewing experience.
You could also consider converting the EPS files to a vector format
that Word does natively support, such as WMF or EMF. Lost of people
use our ps2vector software for this, a commercial batch conversion
program developed expressly for this purpose. It gives you vector
quality display on screen, vector quality printing also to non-PS
printers, and you can scale and edit the image in Word.
Jeroen Dekker