I'm in the same boat as Jittery; I was a mediocre student in undergrad (2.4 GPA)--which is why I am hesitant of even applying. There are some law schools that have a pre-entry program which, will allow you to take a couple of  courses to see how if you're capable of handling the courseload. I would like to talk to someone who was in the same situation, and ended up being accepted.

My advice to you, Jittery is to go for it; you have nothing to lose--even if you're denied admission, as least you've made that effort; however, I'm sure there some school will accept you based on your work experience and LSAT scores.