This can definitely be done. I am going PT, and many of my classmates have spouses, children, and full-time jobs. You will have to find law schools that offer PT programs of course.
I try to do most of my studying on the weekends. It doesn't always work out that way, but there is enough time on the weekends to be able to get your work done. A little review/catch-up during the week will be helpful as well, but there is not much time for that.
Check with the schools you apply to about what it takes to get in-state status. Since my employer transferred me from out of state to the state where the law school was, I have been in-state from day 1.