Expiration Date using Freeradius 1.1.1 and mysql

Good morning all, I would like to be able to begin and expire accounts on certain dates, but I would like to be able to do it by input information into the radius database that I have created using mysql. Also, I appreciate the help you all have given. If I have one bit of information to share with new freeradius people, it is to slow down and do not get ahead of yourself. Once I took it step by step, all the piece feel into place. I get access-accepts using radtest, sql logins and even NTRadPing. So I have come quite far in a week. Thanks again. Dwane