Can there be a good way (ideally with htaccess and mod_rewrite) to pressure the browser to continually access a website using the www. prefix (adding it instantly where necessary?)

Thx.

Rewritecond %{HTTP_HOST} !www.domain.com
RewriteRule ^/(.*)$ http://www.domain.com/$1 [R=301]

or possibly

RewriteCond %{HTTP_HOST} !^www.
RewriteRule ^/(.*)$ http://www.%{HTTP_HOST}/$1 [R=301]