You don't need to have a legal background to help firms with their IT problems. Just go out and do it. If you get an education in the legal field then you'll be doing legal related work. It is like saying dentists need help with IT, therefore I will go to dental school.
But anyway, the legal field really needs some help. Six years ago I was a clerk at an average law office. I went into the store room to get a pen or something, and pulled open a drawer of dictaphones. I asked one of the attorneys what the deal was, and he was like, if you want to make it as a lawyer you need to learn how to use one. They'd dictate out their letters, and then place it in a little plastic bag with a note and drop it off with a paralegal.