Controlling resolution of exported graphs

[David Parkhurst <parkhurs@imap.iu.edu>]

I use s-plus Enterprise Developer Version 7.0.6 for Microsoft Windows : 
2005
I've recently submitted a book to a publisher, and for that book, I 
produced most of the figures using s-plus.  The publisher is telling me 
that my figures have inadequate resolution, less than 300 dpi.  I don't 
see any options in s-plus for controlling the resolution when I export 
graphs.  Is there any way to get figures with higher resolution from s-plus?
Thanks for any help.

David Parkhurst