How to 100% SSL WordPress?

I'd like to be able to offer my clients, lawyers and accountants
a blogging and client management system based on WordPress
that they can trust with sensitive legal and financial information.

Starting with SSL...

Is there a way to make to make wordpress both public facing
and backend admin SSL secured?

By public facing, meaning clients would have access to a
password protected area (powered by wishlist) to interface
with the lawyer to accountant.

That's the start of the idea... please add to how to make it
real. I've already got the SSL lock down for the wp-login
form using my .htaccess file, now need to secure the rest.

Thank you.