I am aware its a bit of an old post but the way I do it is:

1> What is it that the job profile demands in accordance to the area of expertise of the company. Have a fair idea of the products and services they provide would help you get a clear picture of the kind of person they are looking to hire.

2> My prior work experiences an how can I link it to the job description along with a few a services/ products they offer that I have work on before.

3> Prior to the interview create a mental image of yourself being in the job position they are recruiting for along with points 1 and 2.

Just a suggestion