To start, I'd ask the current admin if he is willing to learn something new. If he wants to keep the admin side the same as always, your choices are going to be

To start, I'd ask the current admin if he is willing to learn something new. If he wants to keep the admin side the same as always, your choices are going to be limited. In that case, I'd suggest doing a CSS only edit... If he is interested in learning something new, you have some options. Most of the work I do is in and around the marketing sector. Consequently, I am often in the same place you are - I need non technical people to be able to edit content. When I evaluate solutions, I always focus on two main areas. My solution has to be extremely easy to use and when it fails, it has to fail safe. Under this criteria, Wordpress has always risen to the top. Not only is the admin interface elegant and easy to use, but it would be hard for a user to screw up so badly that he/she kills off the entire site.