First of all, I'd do some research on the competition. Although you want your information to reflect your business, you don't want to re-invent the wheel. Visitors are used to seeing information presented in a certain way. Cater to what they want and you'll find that on other successful sites in your market.
Second, keep your information targeted to your visitors. Have you ever had a potential client walk into your office and asked to see your C.V.? While that may be something you want to put on a back page, the information at the beginning of your site should reflect your client's needs and what your business does to solve their problems. What do you do differently or better than competing law firms that would make a client choose you over them?
I never look at any visitor as "casual". On the web, people are looking for solutions and they don't want icing or even cake. They are looking for meat and potatoes. Show them up front that they are in the right place; that you're firm has the resources, experience, and/or expertise they need to achieve their goals.