The Office of the Clerk of Circuit Court has the necessary forms to register an assumed name. Complete the necessary forms and have all signatures acknowledged by a notary public or deputy Clerk of Circuit Court. Include $10 for the filing fee, $2 to certify a copy of the form to be returned to you, and 50 cents for each page to be copied. If you are mailing the form, include a self-addressed, stamped envelope. Said form is available at http://www.courts.state.va.us/forms/circuit/cc1050.pdf.