Hello,
You can use our predefined Personal payment system for some offline payments by cheque or money order. In this case, when acustomer submits an order, you as an administrator of the site view his payment details and, if approved, process the payment manually.
You can also get more information on setting the personal payment system here:
http://www.viart.com/shopping_cart_personal_payment_system.html
Regards,
ViArt Team