Installation: CMSMS 1.5.4
PHP: Ver 5
My client wants to only see 'www' in her site's URL, which is normally achieved by amending the htaccess file
I've been advised to add this to the .htaccess:
--
RewriteEngine on
RewriteCond %{HTTP_HOST} ^website-name.com [NC]
RewriteRule ^(.*)$ http://www.website-name.com/$1 [L,R=301]
--
Of course I replaced 'website-name.com' - with the real live website name

I had already set up Pretty URLs, so once I added this, the Pretty URLs stopped working, and I could no longer login to the Admin.
Does anyone know of the best way to implement (1) Pretty URLS, with (2) 'www' - either using .htaccess or some other way?
I really have no knowledge of how to write the .htaccess apart from using it for Pretty URLs.
Any assistance is greatly appreciated!
Many thanks