Hmm . . .
They are saved at work on a PC using 97 Word (as a .doc file). When I try opening them using Pages, I get the message "The document ***** cannot be opened." I open the same file from email and my flash drive on my IMac. Go figure!
If you save the file from Mail onto your Desktop, can you then run Pages
and open the file from there?
Also, after you save the file, do a Get Info (under Finder -> File), and see
what the default program is that opens .doc files. Hopefully, it's set for
Pages . . .
And can you open the file with NeoOffice?
I don't know what's happening on your system, but I just opened a .doc
from a friend (select attachment, then right-click, then "Open With" and
choose Pages) - no problems . . .
Hope this helps - let us know what you've tried . . .