Creata Badge Number with New Employee

We use the HR Employee Extra table to populate badge numbers for our employees, what we are trying to do is streamline the process of assigning the badge number to an employee when their employee id is created and activated. We want a unique badge number created and pushed to the EX010130 table when an Employee # is created. Can this be done with the VB Modifer, and if so does someone happen to have a script or sample script of how to do this?