Purchase Orders A Purchase Order is a promise of payment. While you may attend the conference with only a purchase order on file, it will not change the balance due for any registrant.   Registrants may provide a purchase order during registration as a method of payment. A purchase order must be on file with conference staff (including a valid number and a copy of the P.O.). Purchase orders can be mailed, faxed or e-mailed.   Mail to: Dallas Children's Advocacy Center P.O. Box 720338 Dallas, Texas 75372-0338   Fax to: 214-515-9047 Email to: conference@dcac.org Participants using a purchase order will be billed for full conference fees either upon receipt of the P.O. or immediately following the conference. Payment must be made within 30 days of the last day of the conference and those with a balance due after this deadline will be subject to a monthly billing fee.   Any individual who attended the conference by using a purchase order is liable for all fees and will be personally invoiced if appropriate billing information is not provided during registration, or if payment is not received within 30 days of the last day of the conference.