Gather a list of law schools you would like to attend. Explore your options and narrow down your list.
Get the contact information for the office of admissions for each of the law schools on your short list. Write down this information in an easy-to-access location.
Contact each office of admissions explaining your situation. Find out what is necessary to get into their school without an undergraduate degree. For example, the Thomas M. Cooley Law School requires students to obtain at least 3/4 of their undergraduate degree to even be considered for the school.
Craft a letter for each school that allows admissions without an undergraduate degree. Treat it like a cover letter. Make sure you make it clear why you are well suited to succeed at their school, as that is what they are looking for in each applicant. Understand that your cover letter has far more weight on it than the average cover letter, since you are lacking in the undergraduate degree (unlike most applicants).
Gather letters of recommendation from past college professors (if you attended an undergraduate school at all) or from other sources. Attach these to your cover letter along with a CV or résumé.
Follow up on your cover letter after some time has passed. A follow-up shows the college your determination and desire to get into its program.