Billing Contacts

In Faroe Islands we do NOT use registrars. The customers apply for domain names directly on the cctldM's homepage. For each domain we have 3 kinds of contacts: Administrative Contact (Holder of Domain) Nameserver Contact (Zone Contact) Billing Contact (where to send the bill) I am trying to use as much as possible of FRED, and build as little as possible myself. So i was thinking about, if i could maintain our "Billing Contacts" in the same way as "Registrars" are maintained in the FRED system ? I asked something a bit similar before, and I think that you will not recommend this, but i just want to hear your opinion again, so i can understand it as good as possible. Is it to difficult with all the usernames and passwords ? (technical) And are there other things, where there is a difference between "registrars" and our "Billing contacts" ? (data in database?) What do you think ? This email and its attachments may be confidential and are intended solely for the use of the individual to whom it is addressed. If you are not the intended recipient or authorized to receive information for the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. If the email contains proposals, they are valid for 30 days following the date of email transmission. Finally, the recipient should check this email and any attachment for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by email.