I can relate to your predicament and was actually in a similar situation when I was applying to law school (many years ago). My problem was that I wanted the admissions committee to focus on my GPA from my Jr and Sr years of college, and to demonstrate that my academic aptitude (and maturity) increased drastically from my freshmen year (and would continue to do so in law school).
Thus, I attached to my applications what I referred to as a "Grade Point Breakdown", which was a two page attachment consisting of my GPA for each year of college and a chart indicating my improving performance.
It seemed to work, I received admission to my first choice of law schools, and have been practicing law for some time now.
If you don't mind me asking, why exactly do you want to go to law school? I ask because I mentor many prospective law students and they all seem to be well prepared for the LSAT, but put ZERO thought into developing a career plan that suits their interests and strengths... and speaking as someone who has been down this road, a career plan is ESSENTIAL.
I also contribute to a website that may interest you; http://www.become-a-lawyer.com