How do I used my customized table in Ms Sql through perl script

hi, I am using free radius server 2.0 and Ms Sql 2000, I want to used my customized tables which contains only username and password.I used to authenticate using perl script. Can I write SQL queries inside the perl script to fetch the data from the table rather than from the dialup.conf for Ms Sql so that i can used my customize table. Elangbam Johnson