Trying to get attorneys as clients can be a little tough, since what they do is extremely confidential and taking the work out of the office is an issue. I work with an immigration attorney doing his translations and sometimes typing documents, when his paralegal can't handle the work load. I must say, working with them is a nice experience but they are very limited when it comes to sending out the work from their office.
As far a promoting your business, Yes, I agree with the ladies here, network, network and network. Unless you don't mind cold calling or going out there telling everyone about your services.
Best of luck.